I can tell by my own reaction to it that this book is harmful." But let him only wait and perhaps one day he will admit to himself that this same book has done him a great service by bringing out the hidden sickness of his heart and making it visible.— Altered opinions do not alter a man’s character (or do so very little); but they do illuminate individual aspects of the constellation of his personality which with a different constellation of opinions had hitherto remained dark and unrecognizable.

It is only when we have ceased to be the followers of our followers that we comprehend how meaningless followers are.

When I was twelve years old I thought up an odd trinity: namely, God the Father, God the Son, and God the Devil. My inference wasthat God, in contemplating himself, created the second person of the godhead; but that, in order to be able to contemplate himself, he had to contemplate, and thus to create, his opposite.--With this I began to do philosophy.

It is the privilege of greatness to confer intense happiness with insignificant gifts.

Plato was a bore.

Consider the cattle, grazing as they pass you by. They do not know what is meant by yesterday or today, they leap about, eat, rest, digest, leap about again, and so from morn till night and from day to day, fettered to the moment and its pleasure or displeasure, and thus neither melancholy nor bored. [...] A human being may well ask an animal: 'Why do you not speak to me of your happiness but only stand and gaze at me?' The animal would like to answer, and say, 'The reason is I always forget what I was going to say' - but then he forgot this answer too, and stayed silent.

There cannot be a God because if there were one, I could not believe that I was not He.