I am still at Trattenbach, surrounded, as ever, by odiousness and baseness. I know that human beings on the average are not worth much anywhere, but here they are much more good-for-nothing and irresponsible than elsewhere.

If in life we are surrounded by death, so too in the health of our intellect by madness.

If a lion could talk, we could not understand him.

The aspects of things that are most important for us are hidden because of their simplicity and familiarity. (One is unable to notice something because it is always before one’s eyes.) The real foundations of his enquiry do not strike a man at all

Proof, one might say, does not merely shew that it is like this, but: how it is like this. It shows how 13+14 yield 27.

That which cannot be said must not be said. That which cannot be said, one must be silent thereof.

It is much easier to bury a problem than to solve it.