Whatever Nature undertakes, she can only accomplish it in a sequence. She never makes a leap.

The thinker makes a great mistake when he asks after cause and effect. They both together make up the indivisible phenomenon.

Moral epochs have their course as well as the seasons. We can no more hold them fast than we can hold sun, moon, and stars. Our faults perpetually return upon us; and herein lies the subtlest difficulty of self-knowledge.

If children grew up according to early indications, we should have nothing but geniuses.

If you live criticizing people, you won't have time to love them.

The greater part of all the mischief in the world arises from the fact that men do not sufficiently understand their own aims.

I respect the man who knows distinctly what he wants.