Man feels the urge to run up against the limits of language. Think for example of the astonishment that anything at all exists. This astonishment cannot be expressed in the form of a question, and there is also no answer whatsoever. Anything we might say is a priori bound to be nonsense. Nevertheless we do run up against the limits of language. Kierkegaard too saw that there is this running up against something, and he referred to it in a fairly similar way (as running up against paradox). This running up against the limits of language is ethics.
Ludwig WittgensteinA wheel that can be turned though nothing else moves with it, is not a part of the mechanism.
Ludwig WittgensteinA man will be imprisoned in a room with a door that's unlocked and opens inwards; as long as it does not occur to him to pull rather than push it.
Ludwig WittgensteinTo convince someone of the truth, it is not enough to state it, but rather one must find the path from error to truth.
Ludwig WittgensteinWhere does our investigation get its importance from, since it seems only to destroy everything interesting, that is, all that is great and important? (As it were all the buildings, leaving behind only bits of stone and rubble.) What we are destroying is nothing but houses of cards and we are clearing up the ground of language on which they stand.
Ludwig Wittgenstein