It is almost everywhere the case that soon after it is begotten the greater part of human wisdom is laid to rest in repositories.

Every condition of the soul has its own sign and expression...So you will see how hard it is to seem original without being so.

As soon as you know a man to be blind, you imagine that you can see it from his back.

A schoolteacher or professor cannot educate individuals, he educates only species.

One must judge men not by their opinions, but by what their opinions have made of them.

One might call habit a moral friction: something that prevents the mind from gliding over things but connects it with them and makes it hard for it to free itself from them.

If you are going to build something in the air it is always better to build castles than houses of cards.