Abstract

Schlick’s relationship with the Tractatus has been mainly investigated in what concerns the conception both of language and world, the insight of logic, the criteria of verifiability, the proper role of philosophy as mental activity. However, some other features of Schlick’s reading of the Tractatus require a closer consideration. In the 1920s, Schlick was dealing with the questions of ethics (and, to some extent, of religion), that represent from the early days the core issue of his philosophy of culture. Schlick’s intellectual relationship with Wittgenstein ought to be explored also in this broader context, namely after his first encounter with the Tractatus. As it emerges from their private conversations in 1929, Schlick did not agree with Wittgenstein’s account of ethics as a domain going beyond the limits of language. Whereas Wittgenstein maintains that “that ethics cannot be put into words. Ethics is transcendental. (Ethics and aesthetics are one and the same [Tractatus 6.421]”, Schlick considers ethics as a factual science. As he says in the Problems of ethics (1930), “if there are ethical questions that have meaning, and are therefore able to be answered, then ethics is a science”. Wittgenstein’s position is patently in contrast with Schlick’s. According to Wittgenstein, ethics, no differently from religion, cannot be tested as is usual for meaningful propositions, namely by recurring to hypotheses, high probability or knowing. My paper aims at highlighting this contrast, that is rooted both in the Tractatus and in Schlick’s conception of ethics as science already endorsed in his work before the arriving in Vienna. How Schlick would have appreciated Wittgenstein’s late thoughts on ethics remains, at any rate, an open question.