La historia de la Cirugía Pediátrica cubana está pendiente de ser documentada científicamente. Se estableció como objetivo definir las etapas de desarrollo de la especialidad en Cuba, para lo cual se hizo un análisis histórico y se identificó cuatro períodos fundamentales. Este artículo tiene una significación práctica puesto que permite conocer en qué momento se encuentra la especialidad para modelar el futuro de la misma. The history of Cuban pediatric surgery is pending of being scientifically documented. It was established as (...) an objective to define the stages of the development of the specialty in Cuba. For this purpose a historical analysis was carried out and four main periods were identified. This study has a practical importance because it allows knowing the stage in which the specialty is to model its future. (shrink)

The aim of this study is to assess the knowledge, attitudes and experiences of Spanish nurses in relation to euthanasia and physician-assisted suicide. In an online questionnaire completed by 390 nurses from Andalusia, 59.1% adequately identified a euthanasia situation and 64.1% a situation involving physician-assisted suicide. Around 69% were aware that both practices were illegal in Spain, while 21.4% had received requests for euthanasia and a further 7.8% for assisted suicide. A total of 22.6% believed that cases of euthanasia had (...) occurred in Spain and 11.4% believed the same for assisted suicide. There was greater support (70%) for legalisation of euthanasia than for assisted suicide (65%), combined with a greater predisposition towards carrying out euthanasia (54%), if it were to be legalised, than participating in assisted suicide (47.3%). Nurses in Andalusia should be offered more education about issues pertaining to the end of life, and extensive research into this area should be undertaken. (shrink)

Classical epistemic logic describes implicit knowledge of agents about facts and knowledge of other agents based on semantic information. The latter is produced by acts of observation or communication that are described well by dynamic epistemic logics. What these logics do not describe, however, is how significant information is also produced by acts of inference— and key axioms of the system merely postulate "deductive closure". In this paper, we take the view that all information is produced by acts, and hence (...) we also need a dynamic logic of inference steps showing what effort on the part of the agent makes a conclusion explicit knowledge. Strong omniscience properties of agents should be seen not as static idealizations, but as the result of dynamic processes that agents engage in. This raises two questions: (a) how to define suitable information states of agents and matching notions of explicit knowledge, (b) how to define natural processes over these states that generate new explicit knowledge. To this end, we use a static base from the existing awareness literature, extending it into a dynamic system that includes traditional acts of observation, but also adding and dropping formulas from the current ' awareness' set. We give a completeness theorem, and we show how this dynamics updates explicit knowledge. Then we extend our approach to multi-agent scenarios where awareness changes may happen privately. Finally, we mention further directions and related approaches. Our contribution can be seen as a ' dynamification' of existing awareness logics. (shrink)

At the centre of the monograph (1984, first edition) lies a detailed interpretation and critique of the idea of the Good in the Republic. The main thesis of the interpretation runs as follows: The idea of the Good functions as a third item between thinking and being. The main purpose of the monograph is to introduce the systematic problem of the third item via the historical problem of the idea of the Good. The second, enlarged edition (1989) gives a new (...) reconstruction of an "exasperatingly difficult but ever fascinating topic" (H. Cherniss), that is, of the platonic theory of the ideal numbers and the two principles that were contained in the “so-called unwritten doctrines” (Aristotle). The final chapter gives new information on the reception of Plato's idea of the Good in P. Natorp and M. Heidegger. It also includes an updated bibliography. The third edition (2015) is a reprint of the second edition of 1989. Further remarks and an updated bibliography to 2005 are to be found in: - Ferber, Rafael (2005). Ist die Idee des Guten nicht transzendent oder ist sie es doch? Nochmals Platons ΕΠΕΚΕΙΝΑ ΤΗΣ ΟΥΣΙΑΣ. In: Barbaric Damir: Platon über das Gute und die Gerechtigkeit / Plato on Goodness and Justice / Platone sul Bene e sulla Giustizia. Würzburg, 149-174. - Ferber, Rafael / Damschen, Gregor (2015). Is the Idea of the Good Beyond Being? Plato's "epekeinea tês ousias" Revisted (Republic, 6, 509b8-10). In: Nails, Debra; Harold, Tarrant; Kajava, Mika; Salmenkivi, Eero. Second Sailing: Alternative Perspectives on Plato. Espoo, 197-203. (shrink)

At the centre of the monograph (1984, first edition) lies a detailed interpretation and critique of the idea of the Good in the Republic. The main thesis of the interpretation runs as follows: The idea of the Good functions as a third item between thinking and being. The main purpose of the monograph is to introduce the systematic problem of the third item via the historical problem of the idea of the Good. The second, enlarged edition (1989) gives a new (...) reconstruction of an "exasperatingly difficult but ever fascinating topic" (H. Cherniss), that is, of the platonic theory of the ideal numbers and the two principles that were contained in the “so-called unwritten doctrines” (Aristotle). The final chapter gives new information on the reception of Plato's idea of the Good in P. Natorp and M. Heidegger. It also includes an updated bibliography. The third edition (2015) is a reprint of the second edition of 1989. Further remarks and an updated bibliography to 2005 are to be found in: - Ferber, Rafael (2005). Ist die Idee des Guten nicht transzendent oder ist sie es doch? Nochmals Platons ΕΠΕΚΕΙΝΑ ΤΗΣ ΟΥΣΙΑΣ. In: Barbaric Damir: Platon über das Gute und die Gerechtigkeit / Plato on Goodness and Justice / Platone sul Bene e sulla Giustizia. Würzburg, 149-174. - Ferber, Rafael / Damschen, Gregor (2015). Is the Idea of the Good Beyond Being? Plato's "epekeinea tês ousias" Revisted (Republic, 6, 509b8-10). In: Nails, Debra; Harold, Tarrant; Kajava, Mika; Salmenkivi, Eero. Second Sailing: Alternative Perspectives on Plato. Espoo, 197-203. (shrink)

The confinement of the population into their homes as a result of COVID-19 has entailed a notable increase in the consumption of diverse media. This exploratory study aimed to examine how the increase in media consumption was related to subjective happiness and psychological well-being. For this purpose, a questionnaire was administered to a sample of Spanish adults to assess their consumption of different media before and during confinement. Moreover, participants were evaluated for hedonic, eudaimonic, social, and experienced happiness by using (...) the Pemberton Happiness Index. The results underlined the great increase in the consumption of TV for entertainment and social networking sites during confinement. Furthermore, it was found that higher consumption was negatively correlated with the level of happiness, so that, people who reported greater well-being, both subjective and psychological, spent less time watching TV and using SNS. In contrast, no association was found between the level of happiness and the consumption of news and radio. Therefore, it seems that far from cultivating greater happiness, those who engaged in heavy consumption of TV entertainment and SNS during confinement were less happy than those who did so more moderately and spent more time using other media or performing other activities. (shrink)

The article is the shortened English version of the article “Was und wie hat Sokrates gewusst?” Elenchos: Rivista di studi sul pensiero antico, 28, 5-39. First, it states a set of seven “knowledge-claims” made by Socrates: 1. There is a distinction between right opinion and knowledge. 2. Virtue is knowledge. 3. Nobody willingly does wrong. 4. To do injustice is the greatest evil for the wrongdoer himself. 5. An even greater evil is if the wrongdoer is not punished. 6. The (...) just person is happy; the unjust person is unhappy. 7. The pleasant is not the good. These claims seem to be the “few” but “very important” things that Socrates claims to know. Second, it tries to answer the second question and defends the thesis that the supposed “knowledge” of Socrates is dianoetic, but not noetic. The main new idea of this paper is the comparison of the Socratic knowledge-claims with the upper states of the mind symbolized in the Divided Line, noesis and dianoia. (shrink)

Mi propósito en este trabajo es reconsiderar una de las lecturas más relevantes y provocativas que se han hecho sobre John Dewey en el mundo de habla hispana. En la primera parte reconstruyo las circunstancias que rodearon la difusión, interpretación y traducción de las obras de Dewey en el México de mediados de los años 1940, y en concreto las razones que llevaron a que la visión sociológica que José Medina Echavarría quiso dar de Dewey fuera finalmente desplazada por la (...) filosófica de José Gaos. En la segunda parte analizo la traducción y lectura que Gaos hizo de Experience and Nature de Dewey, teniendo muy presente sus comparaciones con Sein und Zeit de Heidegger . Finalmente, propongo algunas críticas a la visión que Gaos transmite de Dewey como un pensador carente de un tipo de "soberbia diabólica" propia de la verdadera gran filosofía. The purpose of this work is a reconsideration of one of the most relevant and provocative readings of John Dewey written in the Hispanic World. In the first part I reconstruct the circumstances which surrounded the publicity, interpretation and translation of John Dewey's works in the Mexico of the middle 1940's, particularly the reasons why the sociological reading of Dewey that José Medina Echavarría proposed was finally displaced by the metaphysic perspective of José Gaos. In the second part I reconsider Gaos' own translation and interpretation of Experience and Nature, taking in consideration his comparisons with Heidegger's Sein und Zeit . Finally I analyze critically Gaos' view of Dewey as a thinker whose philosophy lacked the "diabolical arrogance" that true great philosophy would seem to require. (shrink)

El desarrollo de internet en los últimos años ha sido espectacular. Con la explosión del internet de las cosas (IoT) el procesamiento de datos incrementa su complejidad, pero también sus beneficios. No obstante, en la última década han surgido periódicamente noticias que nos muestran una serie de efectos de esta tecnología, alejados de la visión casi mítica que siempre ha tenido y que pudiera afectar a elementos básicos de nuestra democracia. En este trabajo se señalan tres de los principales retos (...) que tienen nuestros Estados democráticos de derecho. El primero es el de los datos y la forma en qué son procesados. El segundo es el uso de la tecnología de la información para la vigilancia de la ciudadanía con el uso de instrumentos que vulneren las garantías contempladas por los derechos fundamentales. Finalmente, la manera en que internet impacta en la formación y educación cívica. Se finalizarán con unas breves conclusiones donde se contemplarán algunas propuestas. (shrink)

Abstract: It deals with the question of what a moral judgment is. On the one hand, a satisfactory theory of moral judgments must take into account the descriptive character of moral judgments and the realistic language of morals. On the other hand, it must also meet the non-descriptive character of moral judgments that consists in the recommending or condemning element and in the fact that normative statements are derived from moral judgments. However, cognitivism and emotivism or “normativism” are contradictory theories: (...) If moral judgments are descriptive, it is not possible to deduce norms from them. But if one can deduce norms from moral judgments, they are not descriptive. As a solution to this problem, the paper suggests that moral judgments represent institutional facts; the corresponding theory is moral institutionalism. A moral institutional fact – “an act X is Y”, Y” means “morally right” or “morally false” – is a hybrid of descriptive and prescriptive elements: It is stating a fact in descriptive language (“is”) and at the same time, it is short for the prescriptive constitutive rule “X is Y according to the moral rules of the language community C”. Institutional facts contain normative presuppositions without letting them appear in their grammatical form. Institutional facts are now (in relation to the language community C) objective and intersubjective and they can be generalized (cognitive aspect), although they cannot be reduced to brute physical or psychological facts, and it is also possible to deduce norms from them because they are built into them. The meta-ethical concept of moral institutionalism, which is evolved further in the paper, preserves the best intentions of emotivism and cognitivism without leading to contradiction. As a by-product, the article shows exactly the error in J. R. Searle’s alleged counterexample against the so-called naturalistic fallacy from “is” to “ought”. This lies in the normative “are” of the analytic premise or definition in “2a. All promises are [that is ought to be] acts of placing oneself under (undertaking) an obligation to do the thing promised”. In “Key concepts in philosophy”, Sankt Augustin 2015, institutionalism is explained further (p.184-191) and confined to what Hegel has called “Sittlichkeit” that is customary morality in in distinction to the “morality” of my personal consciousness (p.212-213):. (shrink)

It deals with the question of what a moral judgment is. On the one hand, a satisfactory theory of moral judgments must take into account the descriptive character of moral judgments and the realistic language of morals. On the other hand, it must also meet the non-descriptive character of moral judgments that consists in the recommending or condemning element and in the fact that normative statements are derived from moral judgments. However, cognitivism and emotivism or “normativism” are contradictory theories: If (...) moral judgments are descriptive, it is not possible to deduce norms from them. But if one can deduce norms from moral judgments, they are not descriptive. As a solution to this problem, the paper suggests that moral judgments represent institutional facts; the corresponding theory is moral institutionalism. A moral institutional fact – “an act X is Y”, Y means “morally right” or “morally false” – is a hybrid of descriptive and prescriptive elements: It is stating a fact in descriptive language (“is”) and at the same time, it is short for the prescriptive constitutive rule “X is Y according to the moral rules of the language community C”. Institutional facts contain normative presuppositions without letting them appear in their grammatical form. Institutional facts are now (in relation to the language community C) objective and intersubjective and they can be generalized (cognitive aspect), although they cannot be reduced to brute physical or psychological facts, and it is also possible to deduce norms from them because they are built into them. The meta-ethical concept of moral institutionalism, which is evolved further in the paper, preserves the best intentions of emotivism and cognitivism without leading to contradiction. As a by-product, the article shows exactly the still undetected error in J. R. Searle’s alleged counterexample against the so-called naturalistic fallacy from “is” to “ought”. This lies in the normative “are” of the analytic premise or definition in “2a. All promises are [that is ought to be] acts of placing oneself under (undertaking) an obligation to do the thing promised”. (shrink)

J. S. Mill and the Art of Compromise The word compromise means a kind of agreement and a concession to something harmful or wrong. I argue that particularly this second sense is quite relevant in the ethics of political action. John Stuart Mill focused upon this issue in his Thoughts on Parliamentary Reform 1859. I outline Mill's doctrine on compromise looking at the external and internal features of an acceptable measure of compromise. These features provide a set of conditions necessary (...) in order for compromise to take place, but they do not guarantee sufficient conditions. In order to assess Mill's political coherence and to draw a general distinction between strategic and ethical compromises the paper concludes by considering two compromise measures that Mill adopted while he was a Member of Parliament. (shrink)

The paper proposes (1.) a non-standard interpretation of the proverbial expression “deuteros plous” by giving a fresh look to Phaedo, 99c9-d1. Then (2.) it proceeds to the philosophical problem raised in this passage according to this interpretation, that is, the problem of the “hypothesis” or the “unproved principle”. It indicates finally (3.) the kernel of truth contained in the standard Interpretation and it concludes with some remarks on the “weakness of the logoi”.

La teoria della conoscenza può essere intesa in due modi diversi, a seconda di che cosa si intende per conoscenza. In un primo senso, per conoscenza si intende il processo mediante cui conosciamo. In un secondo senso la conoscenza è intesa come il risultato di tale processo, ossia come sinonimo di sapere. Questi due significati sono riflessi nei diversi termini con cui vengono denotati in altre lingue. Mentre una teoria della conoscenza intesa come sapere non ha relazioni significative con le (...) neuroscienze (ma piuttosto con discipline filosofiche come la logica, la metodologia, la semiotica, l'ontologia), una teoria dei processi conoscitivi ha rapporti significativi con le neuroscienze, e fin dall'antichità i filosofi hanno riconosciuto nel cervello il supporto fisico delle attività cognitive superiori. Con ciò, tuttavia, le neuroscienze non possono presentarsi come surrogato di una teoria filosofica del conoscere, in quanto i processi cognitivi debbono essere preliminarmente definiti in sede filosofica, al fine di poter studiare le loro correlazioni (bidirezionali) con fenomeni nervosi. (shrink)

A strange dialectical reversal characterizes the oppositions which psychoanalysis posits against philosophy and neuroscience: what psychoanalysis intervenes with as a unique and missing quality of these subjects, reveals itself upon enquiry as already having been a feature of said subjects. This article first discusses the failed intervention of psychoanalysis within the perceived totalities and absolutes of German idealism. Psychoanalysis, founded on an ontological division and internal inconsistency with a retroactive logic, finds this internal contradiction already reflected within the supposed totalities (...) of Schelling and Hegel. Schelling’s “blind act,” a decision with no prior foundation that grounds an abstract identity-in-itself, appears as the counterpart to what Badiou calls the strictly “analytic act.” Hegel’s Science of Logic, in which the inconclusive interpenetration of being and nothing presupposes its own conclusion in the transitions to essence, and in which an internal incompleteness and contradiction are retroactively constitutive of the concept, similarly nullifies the intervention of psychoanalysis. Finally, precisely such a reversal is presented in neuroscience, where the constitutive contradiction of contingently functional neuronal formations in the adaptive “multiple demand” model of executive functioning repeats the contingent and self-contradicting psychoanalytic subject as being its own deference within linguistic, discursive formations. (shrink)

*Winner of the American Philosophical Association's 2020 Essay Prize in Latin American Thought* This essay offers a novel account of the secularity of Latin American liberation philosophy. It challenges the accepted notion that liberation philosophy applies the methods and approaches of Latin American liberation theology to the philosophical arena, thus putting liberation theology on secular grounds. While this formulation is true insofar as liberation philosophy is not bound by the hermeneutics of any particular religious tradition, this formulation could be misconstrued (...) given that liberation philosophy does not premise such secularization in an undialectical understanding of secularity as secularism that disavows religion. Rather, liberation philosophy’s secularity is dialectical in that it requires constant engagement with re-ligion, not in the hermeneutics of any specific tradition but with “the traditional question of the Absolute.” Due to this often-misunderstood element of liberation philosophy, it has frequently been “ghettoized and relegated to the ‘safe’ area of theological studies,” as Eduardo Mendieta argues. However, I contend that liberation philosophy’s secular grounds offer an original contribution to philosophy as a decolonial and postsecularist liberation philosophy, one that conceives of secularism as an aspect of coloniality to be overcome, an obstacle rather than a benefit for Latin American philosophers seeking to gain a better understanding of our historical conditions. (shrink)

The basic aim of this work is to highlight the structure which Thomas Aquinas finds in Aristotle's Politics on natural servitude, trying to recover the doctine defended by the Philosopher and commented by St. Thomas.

De la identidad literaria salvadoreña como exilio, se examina la obra clásica de nueve autores. Al aplicar una perspectiva psicoanalítica, el ensayo toma como punto de partida una tarjeta que Roque Dalton envió desde Cuba a una amante lejana en El Salvador. La escritura establece la deuda y la memoria como principios rectores para recuperar el pasado. Un compromiso subjetivo con el objeto del amor perdido la patria y la amante dicta el movimiento de la inscripción poética. Esta ausencia del (...) cuerpo a recuperar se aplica en seguida, en primer lugar, a Francisco Gavidia, que funda el indigenismo salvadoreño, utilizando técnicas literarias europeas, con lo cual ignora las lenguas indígenas, luego a Alberto Masferrer, que se retrata sufriendo las tribulaciones y la pasión de Cristo en el exilio, antes de construir un proyecto político de país. En tercer lugar, Arturo Ambrogi percibe en el campesino salvadoreño al poeta medieval localizado en un locus amoenus, encantado por la belleza del campo. Francisco Miranda Ruano inaugura una visión más trágica, ya que su salida de la ciudad para recrear el esplendor del campo concluye con su regreso a los suburbios pobres, antes de suicidarse. En quinto lugar, Salarrué mezcla fantasía y realismo para retratar sus diversas máscaras o personajes, así como para disimular la violencia sexual y racial. Según el proverbio español “el hábito hace al monje”, el ser y los actos se juzgan siempre por la apariencia. Claudia Lars prescribe un movimiento dual, primero para sustituir su nombre real, Carmen Brannon, por su seudónimo literario, y luego para recuperar su infancia de sus habilidades adultas, que ella desarrolla, gracias al legado poético de su padre extranjero. Los hermanos Alfred y Miguel Ángel Espino proponen un patrimonio complejo. Si el primero idealiza el campo en una recuperación nostálgica del vientre materno cuya contrapartida nombra al amante imposible que lo inclina al suicidio, el segundo apunta a restituir una educación verdaderamente americana, sin revitalización alguna de las lenguas indígenas ni de su tierra ancestral confiscada. José Napoleón Rodríguez Ruiz estipula cómo solo un recuerdo lejano recupera un relato testimonial del pasado. Al vaticinar un tema de actualidad -el acoso sexual y la migración, su personaje campesino narra cómo el exilio reinventa su identidad rural. Finalmente, en un retorno sinodal, desde lejos, Dalton replica la nostalgia de Rubén Darío por ser alguien más de lo que es a la hora de recrear sus años de formación como poeta. En resumen, este bosquejo de nueve autores del siglo XX delinea no solo cómo una idea de exilio anticipa la diáspora actual. El ensayo también sugiere cómo los estudios culturales continúan una nostálgica recuperación de la memoria por una revolución sinódica, y reclama la actualidad de aquellos autores consagrados en un canon literario monolingüe. (shrink)

En este artículo haré un análisis crítico del debate entre Larry Laudan y algunos defensores del Realismo Epistemológico Convergente. Según esta postura, las mejores teorías científicas exhiben éxito referencial y este rasgo prueba que tales teorías son, al menos, aproximadamente verdaderas. Para Laudan, es irrelevante considerar y tratar a las teorías científicas como si fueran verdaderas. Mostraré que los argumentos de Laudan en contra del Realismo Epistemológico Convergente son bastante plausibles, por lo que la defensa realista en contra de estos (...) argumentos parece no ser exitosa. (shrink)

Históricamente, en los principales análisis filosóficos sobre el concepto de ‘verdad’ estuvo implícita lo que hoy se conoce como la teoría correspondentista de la verdad, la cual puede ser trazada desde Aristóteles hasta Immanuel Kant. A principios del siglo XIX, los detractores de la teoría correspondentista de la verdad comenzaron a argumentar, entre otras cosas, que esta postura es oscura, demasiado estrecha y autocomplaciente o argumentativamente circular. No obstante, en el ámbito científico algunos defensores de ciertas posturas realistas de la (...) ciencia han considerado que la verdad es la meta cognoscitva más importante de la actividad científica. Este estudio se realizó para establecer la plausibilidad de este argumento realista. Mediante el análisis de la validez de algunos argumentos de tipo ontológico, semántico y epistémico propuestos por algunos defensores de distintas versiones del llamado ‘Realismo Científico’, con los que se intenta relacionar el éxito empírico y predictivo de las mejores teorías científicas con la verdad, se muestra que, desde un punto de vista lógico, parece difícil confirmar que tales teorías nos proporcionen conocimiento confiable del mundo natural. Se sugiere que los científicos no son agentes confirmadores; sino agentes probabilísticos, esto es, agentes que buscan calcular la probabilidad con la que un hacedor de verdad convierte en verdadero a un portador de verdad con el que la ciencia comunica sus resultados. (shrink)

Las experiencias místicas y el conocimiento que producen son comunicados a través de un lenguaje religioso. En este texto presentaré un estudio de caso de una tradición yóguica del norte de la India, el Surat Shabdt Yoga, que se practica para obtener este tipo de experiencia. Desde el punto de vista de la teoría verificacionista del significado desarrollada por Alfred J. Ayer, el lenguaje religioso carece de significado.Mi objetivo es analizar y evaluar la teoría verificacionista y mostrar que no sólo (...) se auto refuta; sino que también exhibe ciertas inconsistencias lógicas, empíricas y cognitivas que la debilitan como un buen criterio para evaluar la significatividad del lenguaje religioso. Se argumentará que los instrumentos y métodos de verificación se constriñen a nuestras habilidades, límites, expectativas e intereses cognitivos específicos; por lo que el valor de verdad del contenido fáctico de los enunciados religiosos no puede ser decidido de forma indubitable. (shrink)

This discussion note aims to show that Moti Mizrahi does not make clear whether the proponents of the semantic view of scientific progress reject or accept the inference rule of Addition. If they reject the rule, then it does not make sense that Mizrahi contrives different types of disjuncts ‘on behalf of’ proponents of the semantic view. If they accept the rule, then the characterisation of the semantic view that Mizrahi discusses has nothing to do with the supposedly arbitrariness of (...) scientific progress, as Mizrahi contends. (shrink)

This paper presents an experience in developing professional ethics by an approach that integrates knowledge, teaching methodologies and assessment coherently. It has been implemented for students in both the Software Engineering and Computer Engineering degree programs of the Technical University of Madrid, in which professional ethics is studied as a part of a required course. Our contribution of this paper is a model for formative assessment that clarifies the learning goals, enhances the results, simplifies the scoring and can be replicated (...) in other contexts. A quasi-experimental study that involves many of the students of the required course has been developed. To test the effectiveness of the teaching process, the analysis of ethical dilemmas and the use of deontological codes have been integrated, and a scoring rubric has been designed. Currently, this model is also being used to develop skills related to social responsibility and sustainability for undergraduate and postgraduate students of diverse academic context. (shrink)

In the whole Corpus Platonicum, we find in principle only one "direct argument" (Charles Kahn) for the existence of the ideas (Tim.51d3-51e6). The purpose of the article is to analyse this argument and to answer the question of why Plato in the Timaeus again defended the existence of the ideas despite the objections in the Parmenides. He defended it again because the latent presupposition of the apories in the Parmenides, the substantial view of sensibles, is removed through the introduction of (...) space as "substantialized extension". First (I) it is shown that Plato remained in dialogues, like the Sophist and Politicus, faithful to the "theory of ideas" despite his criticism in the Parmenides. The common theme in the trilogy of the Theaetetus, Sophist and Politicus is to refute relativism by showing that any relativism presupposes something absolute that is something like the "theory of ideas". The second part of the paper (II) examines closely the logical structure of the argument for the existence of ideas in the Timaeus (51d3-52a7). The third part (III) shows how this argument can avoid the criticism of ideas in the Parmenides. In the Parmenides, sensibles are treated as substantial entities. But, as the Timaeus shows, sensibles are not substantial entities but merely qualities, namely qualities of space, which is the only substance in the sensible world. A shortened English version of the paper appeared in Proceedings of the Fourth Symposium Platonicum, Granada, Selected papers, ed. by T. Calvo/L. Brisson, Academia Verlag, St. Augustin, 1997, 179-186. -/- But the only "direct argument" (Tim.51d3-51e6) seems to be interestingly flawed. Cf. Ferber, Rafael; Hiltbrunner, Thomas, (2005). (shrink)