For what is man without desires, without free will, and without the power of choice but a stop in an organ pipe?

He seemed, indeed, to accept everything without the least condemnation though often grieving bitterly.

Man, do not pride yourself on your superiority to the animals, for they are without sin, while you, with all your greatness, you defile the earth wherever you appear and leave an ignoble trail behind you -- and that is true, alas, for almost every one of us!

To strive consciously for an object and to engage in engineering -- that is, incessantly and eternally to make new roads, wherever they may lead.

It suddenly seemed to me that I was lonely, that everyone was forsaking me and going away from me.

Ah, Father! That’s words and only words! Forgive! If he’d not been run over, he’d have come home today drunk and his only shirt dirty and in rags and he’d have fallen asleep like a log, and I should have been sousing and rinsing till daybreak, washing his rags and the children’s and then drying them by the window and as soon as it was daylight I should have been darning them. What’s the use of talking forgiveness! I have forgiven as it is!

A hundred suspicions don't make a proof.