Misunderstandings and neglect create more confusion in this world than trickery and malice. At any rate, the last two are certainly much less frequent.

The greater the knowledge, the greater the doubt.

We're only really thinking when we can't think out fully what we are really thinking about!

The history of knowledge is a great fugue in which the voices of the nations one after the other emerge.

What is the destiny of man, but to fill up the measure of his sufferings, and to drink his allotted cup of bitterness?

A talent is formed in stillness, a character in the world's torrent.

Master and Doctor are my titles; for ten years now, without repose, I held my erudite recitals and led my pupils by the nose.