A name I have trouble remembering the proper pronunciation of though it is really easy if one remembers that "witt" is VIT!
The linked is probably all one really needs to know about Wittgenstein ... as the linked says:
In other words, in Wittgenstein’s view, philosophy—and by extension rational discourse generally—is helpless when confronted with anything that really matters.
So Wittgenstein claims to have shown definitely that philosophy is only really useful for showing what can NOT be shown by philosophy!
far from being a positivist, . . . Wittgenstein had meant the Tractatus to be interpreted in exactly the opposite sense. Where the Vienna positivists had equated the “important” with the “Verifiable” and dismissed all unverifiable propositions as “unimportant because unsayable,” the concluding section of the Tractatus had insisted—though to deaf ears—that the unpayable alone has genuine value. . . . Wittgenstein’s silence in the face of the ‘unutterable’ was not a mocking silence like that of the positivists, but rather a respectful one. Having decided that “Value-neutral” facts alone can be expressed in regular proposition form, he exhorted his readers to turn their eyes away from factual propositions to the things of true value—which cannot be gesagt [stated] but only gezeigt [shown].
The positivists/materialists believe that all that matters is "particles and progress", Wittgenstein believes that it is the inverse -- it is what you CAN'T say that really ultimately matters!
Therefore in this crazy thought world, demanding vorcifiserly that there is no God, one of their main philosophers says that you can't know anything about that philosophically.
My inclination though is not really "practical" ... that is what I tried to focus on (sometimes successfully) at IBM for 34 years ... so I may well try to understand Wittgenstein in more detail at some point.