Peter Baumann

There is a very plausible principle of the transitivity of justifying reasons. It says that if "p" is better justified than "q" (all things considered) and "q" better than "r", then "p" is better justified than "r" (all things considered). There is a corresponding principle of rational theory choice. Call one theory "a better theory than" another theory if all criteria of theory choice considered (explanatory power, simplicity, empirical adequacy, etc.), the first theory meets the criteria better than the second theory. The corresponding transitivity principle says that if theory A is a better theory than theory B and if theory B is a better theory than theory C, then A is a better theory than theory C. I argue against this principle. It turns out that whenever there are 2 or more relevant and independent criteria of theory evaluation, and whenever at least of one the criteria is "non-linear" in a certain sense, there may be violations of transitivity which do not violate any standards of rationality (of theory choice). This shows, again, that theory choice cannot be seen as merely the application of given rules of rational theory choice.

Kant's political philosophy in general is characterized by two aspects which sometimes compete with each other and sometimes supplement each other: an individualist element on the one hand and a social or "communitarian" element on the other hand. This paper deals with Kant's theory of private property. It attempts to show something that is usually overlooked in the secondary literature: that Kant has two, not just one argument for property. One is based on his theory of freedom and expresses the individualist aspect of his thinking. The other argument is based on Kant's principle of right and expresses the social aspect of his political thought. Despite some problems with his arguments the complexity of Kant's theory remains impressive.

The idea of a social contract has played a major role in modern political philosophy but not in modern epistemology, -- not even in more recent "social theories of knowledge". The idea of an epistemic contract, however, is very interesting and deserves more attention. In this paper, I discuss arguments to the effect that we cannot do without epistemic contracts. I come to the conclusion that these arguments are not convincing. If one wants to make use of contractarian arguments in epistemology, one better looks for different arguments.

Epistemological contextualism ‐ the claim that the truth‐value of knowledge‐attributions can vary with the context of the attributor ‐ has recently faced a whole series of objections. The most serious one, however, has not been discussed much so far: the factivity objection. In this paper, I explain what the objection is and present three different versions of the objection. I then show that there is a good way out for the contextualist. However, in order to solve the problem the contextualist has to accept a relationalist version of contextualism.

Human dignity seems very important to us. At the same time, the concept ‘human dignity’ is extrordinarily elusive. A good way to approach the questions “What is it?” and “Why is it important?” is to raise another question first: In virtue of what do human beings have dignity? Speciesism - the idea that human beings have a particular dignity because they are humans - does not seem very convincing. A better answer says that human beings have dignity because and insofar as they are persons. I discuss several versions of this idea as well as several objections against it. The most promising line of analysis says that human beings cannot survive psychologically without a very basic form of recognition and respect by others. The idea that humans have a very special dignity is the idea that they owe each other this kind of respect. All this also suggests that human dignity is inherently social. Non-social beings do not have dignity - nor do they lack it. It is because we are social animals of a certain kind that we have dignity - not so much because we are rational animals.

Ernest Sosa has made and continues to make major contributions to a wide variety of topics in epistemology. In this paper I discuss some of his core ideas about the nature of knowledge and scepticism. I start with a discussion of the safety account of knowledge – a view he has championed and further developed over the years. I continue with some questions concerning the role of the concept of an epistemic virtue for our understanding of knowledge. Safety and virtue hang very closely together for Sosa. All this easily leads to some thoughts on epistemic scepticism and on Sosa's stance on this.

More than 300 years ago, William Molyneux raised an important and puzzling question which still creates a lot of controversy. What is known as “Molyneux’s question“ was made famous by John Locke’s quote of Molyneux in the second edition of the Essay Concerning Human Understanding: “Suppose a Man born blind, and now adult, and taught by his touch to distinguish between a Cube, and a Sphere of the same metal, and nighly of the same bigness, so as to tell, when he felt one and t’other, which is the Cube, which the Sphere. Suppose then the Cube and Sphere placed on a Table, and the Blind Man to be made to see. Quaere, Whether by his sight, before he touch’d them, he could now distinguish, and tell, which is the Globe, which the Cube.“ I argue for a positive answer to the question.