The author of this book?her first to be translated?is a Dutch psychiatrist. She has set out to relate her clinical experience to a framework of the psychology of Aristotle and St. Thomas Aquinas, and to redress the balance of Freud's studies on sick people by an appeal to closer observation of those who are well. A detailed study of this, in her other works (to be translated) will be awaited wi...

A number of arguments, including (Whittle 2004), (Field 2008), (Shapiro 2012), and (Beall & Murzi 2012), have been put forward for the claim that logical validity is plagued by a paradox (or paradoxes) similar to the more well-known paradoxes that afflict notions such as truth, knowledge, or set. These claims are incorrect. As I will show here, there is no paradox of logical validity. In additi...

Last week, we talked a bit about the Anderson-Belnap logic of entailment, as discussed in Priest’s Introduction to Non-Classical Logic. For a quite different approach to entailment, we’ll look next week at Neil Tennant’s account. Doing things rather out of order, this week I’d like to say something more basic about the problems to which both Anderson and Belnap, on the one hand, and Tennant on ...