Cicero's philosophical works are now exciting renewed interest, in part because he provides vital evidence of the views of the Greek philosophers of the Hellenistic age, and partly because of the light he casts on the intellectual life of first century Rome. This edition uses the 1997 Clarendon text by the acclaimed translator P.G. Walsh.

Irrationality remains a central issue in the philosophy of psychoanalysis. While some approaches in the philosophy of mind have argued that irrationality demands no special account, one of the central conceptual planks of psychoanalytic theory is the notion that irrational motivations have their origin in the dynamic unconscious. This article reviews recent attempts to account for the phenomenon of motivated irrationality, and argues that the problem of self-understanding will remain central to the philosophy of mind so long as we accept (...) the notion of rational agency. Any account of the mind which ignores or denies the appeal of first-person mental phenomena risks rendering itself unintelligible as a convincing account of the conscious subject. (shrink)

Although there is great concern about protecting those who participate in research, little if any concern has been expressed in the literature about protecting “decliners”—individuals who were invited to participate, but did not. However, there are several situations in which potential participants may experience negative consequences if they choose not to participate—for example, the prison setting, where the power imbalance is obvious and the history of research is not a positive one. We offer several options to protect decliners from possible (...) adverse consequences. (shrink)

This exploratory study of ethical decision making by individuals in organizations found moral intensity, as defined by Jones (1991), to significantly influence ethical decision making intentions of managers. Moral intensity explained 37% and 53% of the variance in ethical decision making in two decision-making scenarios. In part, the results of this research support our theoretical understanding of ethical/unethical decision-making and serve as a foundation for future research.

In its original form Dirac's equations have been expressed by use of the γ-matrices γμ, μ=0, 1, 2, 3. They are elements of the matrix algebra M 4 (ℂ). As emphasized by Hestenes several times, the γ-matrices are merely a (faithful) matrix representation of an orthonormal basis of the orthogonal spaceℝ 1,3, generating the real Clifford algebra Cl 1,3 . This orthonormal basis is also denoted by γμ, μ=0, 1, 2, 3. The use of the matrix algebra M 4 (ℂ) (...) to represent Cl 1,3 has some unsatisfactory aspects. The γ-matrices contain imaginary numbers as entries whereas Cl 1,3 is real. Moreover, as a matrix algebra Cl 1,3 is M 2 (ℍ) but only a part of M 4 (ℂ). For that reason we investigate in this paper several forms of Dirac's equations in terms of M 2 (ℍ) instead of M 4 (ℂ). In Section1 we survey Dirac's equations describing the interaction of matter with electromagnetic, electroweak, and strong fields. Section2 deals with electromagnetic/weak interactions employing M 2 (ℍ). Finally, in Section3 we deal with Dirac's equations for strong interactions between quarks. In contrast to su(2) ⊕ u(1), the Lie algebra su(3) is not isomorphic to any subalgebra of Cl 1,3 . Therefore we do not give a description of strong interactions by use of M 2 (ℍ). Instead of such an approach we describe these interactions using the space of quadruples of bivector fields in Cl 1,3 . The thus obtained description has remarkable formal resemblance to the original Dirac equations using wave functions with values in the linear spaceℂ 4. (shrink)