Ethics in Wittgenstein: Early and Late
There's a sharp dichotomy in Wittgenstein's later approach to ethics from what we find in his earlier work. Just as there's a recognizable break between his approach to philosophy and the kinds of claims he makes in The Tractatus and those he later presents us with via his later writings, especially Philosophical Investigations, the change in his approach to moral questions, though less visible because he is less explicit, is noticeable and important. In the Tractatus and in the wake of his immediate return to Cambridge in 1929 after more than a decade's hiatus, Wittgenstein takes a transcendental position vis a vis ethics. It's something, he asserts, that cannot be talked about but can only be felt in one's life. The Tractatus, he tells us, is really an ethical work though only a small part of it (near the end) actually addresses ethics explicitly (and, indeed, somewhat cryptically). There he tells us ethics cannot be talked about, is among those things we can only point mutely at. Later, in his address to the Heretics Society at Cambridge in '29 he says this more explicitly. Ethics involves values we hold for human behavior but there's nothing to be said about it philosophically. We would all be better off to maintain a studied silence on the matter for there is no deriving oughts from is claims, just as Hume told us. But if one could speak of ethics, write a book on the subject, it would shatter the world, he pronounces.
The later Wittgenstein seems to have kept his word on maintaining silence on the subject though ethical concerns run through his personal writings (see especially those published posthumously under the title Culture and Value). He did not contribute anything in philosophical discourse directly pertinent to the matter of ethics . . .