When a single beam-splitter receives two beams of bosons described by Fock states (Bose-Einstein condensates at very low temperatures), interesting generalizations of the two-photon Hong-Ou-Mandel effect take place for larger number of particles. The distributions of particles at two detectors behind the beam splitter can be understood as resulting from the combination of two effects, the spontaneous phase appearing during quantum measurement, and the quantum angle. The latter introduces quantum “population oscillations”, which can be seen as a generalized Hong-Ou-Mandel effect, (...) although they do not always correspond to even-odd oscillations. (shrink)

Abortion is one of the most divisive topics in healthcare. Proponents and opponents hold strong views. Some health workers who oppose abortion assert a right of conscientious objection to it, a position itself that others find unethical. Even if allowance for objection should be made, it is not clear how far it should extend. Can conscientious objection be given as a reason not to refer when a woman requests her doctor to do so? This paper explores the idea of the (...) general practitioner (GP) who declines to make a direct referral for abortion, asking the woman to see another GP instead. The purpose is to defend the claim that an appeal to conscientious objection in this way can be reasonable and ethical. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:BOOK REVIEWS 477 (p. 32), although some might consider him to have been an important historian of logic. I am not certain that citing Carnap and Heideggar (p. 75) can do much to clarify Vires. When one reads 'Henrique Estienne' and "Hipotiposes pirronicas" (p. 266) in an Italian book he is a bit taken aback and wonders whether the author has done his homework. The writer missed a golden (...) opportunity to connect Galileo to the tradition, for his still unpublished Quaestiones on logic and the De motu (both written before 1600) have many interesting comments which tie in directly with the material developed in this volume. This could have provided an excellent bridge to the next'century, when the analytic method began to take a more central role in scientific and methodological discussions. There is still room for a number of studies on the evolution of the analytic method during the Renaissance. Unfortunately Crescini's study barely scratches the surface of this immense subject. Let us hope that his book will at least have the effect of encouraging others to treat the matter with more care, in greater depth, and more exhaustively. The volume is provided with a preface by Giorgio Radetti, who claims more for it than it actually provides, as well as noting that it is the first part of a more comprehensive study by the same author on the formation of the analytic method in Cartesian philosophy (p. 5). The book has a useful index, but unfortunately no bibliography. CHARLESB. ScxiMrrr The University of Leeds Le thomisme et la pens#e italienne de la Renaissance. By Paul Oskar Kristeller. Conference Albert-le-Grand 1965. (Montr6ah Institut d'~tudes m~di~vales, and Paris: Vrin, 1967. Pp. 287. $6) Surprisingly little is known about the later history of Thomism. This brief but very rich lecture by Professor Kristeller, renowned historian of Italian Renaissance philosophy, examines one period in the later career of St. Thomas' thought. This study, based chiefly on unpublished source material, shows that Thomas was very much present to both the humanists and to the academic philosophers during the Renaissance. Such leading humanists as Lorenzo Valla, Giovanni Pico della Mirandola, and Marsilio Ficino, quote St. Thomas frequently and with approval. Even the unfavorable attitudes of Ermolao Barbaro or Baptista Mantuanus show that Thomas was already the most celebrated of mediaeval philosophers. The professors of philosophy at Italian universities, such as Pierre Pomponazzi, speak of Thomas with great respect and regard his theology as in conformity with the truths of faith, even when they reject his philosophy as being in disaccord with the authentic teaching of Aristotle. St. Thomas made a continuous contribution to the development of Renaissance theology and philosophy. Yet the principal Italian thinkers did not follow him strictly nor fall under his exclusive influence. Thomas is merely one of the most important sources, not the prevailing influence, in Renaissance thought. Ficino, for example, is,178 HISTORY OF PHILOSOPHY in accord with Thomas on certain important points, but his own theology is more in the spirit of Plato and Augustine. Professor Kristeller's vast learning is at the service of admirably balanced conclusions. Not everyone will agree with all his interpretations; Ficino perhaps did not imagine himself to be "constructing a system of philosophy" (p. 96) since the very title of his work, Theologia platonica, suggests that he continues, with new materials, the labor of mediaeval theolo#ans. And Ficino's doctrine of the continuity of the supernatural life of the soul in this world and the next (p. 120) seems to be completely in accord with Thomas. But the author's very careful scholarly method and sound general conclusions are beyond criticism. Two hitherto unpublished Latin texts are printed in critical edition at the end of the French lecture, the Opus aureum in Thomistas by Baptists Mantuanus, which is anti-Thomas, and the Opusculum ad Laurentium Medicem on beatitude, by Vincentius Bandellus, which is pro-Thomas. Like Professor Kristeller's fine lecture, these new texts are a permanent contribution to scholarship. PAUL J. W. MILLER University of Colorado The Anatomy of Leviathan. By F. S. McNeilly. (New York: St. Martin's Press, 1968. Pp... (shrink)

One of the most serious pre-occupations of post-medieval philosophy has been to distinguish those kinds of assertion which are either true or false from those which are neither true nor false. A solution to this problem would be of the highest importance. It would indicate in what areas rational inquiry has some hope of success and in what areas it is doomed to frustration. It would tell us, for example, whether it is worth trying to think about the possible mistakenness (...) of our moral principles, or whether such thinking is bound to be ineffective since no truth or falsity attaches to them. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:BOOK REVIEWS 477 (p. 32), although some might consider him to have been an important historian of logic. I am not certain that citing Carnap and Heideggar (p. 75) can do much to clarify Vires. When one reads 'Henrique Estienne' and "Hipotiposes pirronicas" (p. 266) in an Italian book he is a bit taken aback and wonders whether the author has done his homework. The writer missed a golden (...) opportunity to connect Galileo to the tradition, for his still unpublished Quaestiones on logic and the De motu (both written before 1600) have many interesting comments which tie in directly with the material developed in this volume. This could have provided an excellent bridge to the next'century, when the analytic method began to take a more central role in scientific and methodological discussions. There is still room for a number of studies on the evolution of the analytic method during the Renaissance. Unfortunately Crescini's study barely scratches the surface of this immense subject. Let us hope that his book will at least have the effect of encouraging others to treat the matter with more care, in greater depth, and more exhaustively. The volume is provided with a preface by Giorgio Radetti, who claims more for it than it actually provides, as well as noting that it is the first part of a more comprehensive study by the same author on the formation of the analytic method in Cartesian philosophy (p. 5). The book has a useful index, but unfortunately no bibliography. CHARLESB. ScxiMrrr The University of Leeds Le thomisme et la pens#e italienne de la Renaissance. By Paul Oskar Kristeller. Conference Albert-le-Grand 1965. (Montr6ah Institut d'~tudes m~di~vales, and Paris: Vrin, 1967. Pp. 287. $6) Surprisingly little is known about the later history of Thomism. This brief but very rich lecture by Professor Kristeller, renowned historian of Italian Renaissance philosophy, examines one period in the later career of St. Thomas' thought. This study, based chiefly on unpublished source material, shows that Thomas was very much present to both the humanists and to the academic philosophers during the Renaissance. Such leading humanists as Lorenzo Valla, Giovanni Pico della Mirandola, and Marsilio Ficino, quote St. Thomas frequently and with approval. Even the unfavorable attitudes of Ermolao Barbaro or Baptista Mantuanus show that Thomas was already the most celebrated of mediaeval philosophers. The professors of philosophy at Italian universities, such as Pierre Pomponazzi, speak of Thomas with great respect and regard his theology as in conformity with the truths of faith, even when they reject his philosophy as being in disaccord with the authentic teaching of Aristotle. St. Thomas made a continuous contribution to the development of Renaissance theology and philosophy. Yet the principal Italian thinkers did not follow him strictly nor fall under his exclusive influence. Thomas is merely one of the most important sources, not the prevailing influence, in Renaissance thought. Ficino, for example, is,178 HISTORY OF PHILOSOPHY in accord with Thomas on certain important points, but his own theology is more in the spirit of Plato and Augustine. Professor Kristeller's vast learning is at the service of admirably balanced conclusions. Not everyone will agree with all his interpretations; Ficino perhaps did not imagine himself to be "constructing a system of philosophy" (p. 96) since the very title of his work, Theologia platonica, suggests that he continues, with new materials, the labor of mediaeval theolo#ans. And Ficino's doctrine of the continuity of the supernatural life of the soul in this world and the next (p. 120) seems to be completely in accord with Thomas. But the author's very careful scholarly method and sound general conclusions are beyond criticism. Two hitherto unpublished Latin texts are printed in critical edition at the end of the French lecture, the Opus aureum in Thomistas by Baptists Mantuanus, which is anti-Thomas, and the Opusculum ad Laurentium Medicem on beatitude, by Vincentius Bandellus, which is pro-Thomas. Like Professor Kristeller's fine lecture, these new texts are a permanent contribution to scholarship. PAUL J. W. MILLER University of Colorado The Anatomy of Leviathan. By F. S. McNeilly. (New York: St. Martin's Press, 1968. Pp... (shrink)