Honest unaffected distrust of human abilities under all circumstances is the surest sign of strength of mind.

A man of spirit must not think of the word difficulty as so much as existing. Away with it!

Ideas too are a life and a world.

Some people come by the name of genius in the same way that certain insects come by the name of centipede -- not because they have a hundred feet, but because most people can't count above 14.

We have no words for speaking of wisdom to the stupid. He who understands the wise is wise already.

Perhaps in time the so-called Dark Ages will be thought of as including our own.

Too much is unwholesome.