[Science is] the desire to know causes.

It is easier taking the beaten path than making our way over bogs and precipices. The great difficulty in philosophy is to come to every question with a mind fresh and unshackled by former theories, though strengthened by exercise and information.

By retaliating our sufferings on the heads of those we love, we get rid of a present uneasiness and incur lasting remorse. With the accomplishment of our revenge our fondness returns; so that we feel the injury we have done them, even more than they do.

Every man, in judging of himself, is his own contemporary. He may feel the gale of popularity, but he cannot tell how long it will last. His opinion of himself wants distance, wants time, wants numbers, to set it off and confirm it.

We uniformly applaud what is right and condemn what is wrong, when it costs us nothing but the sentiment.

The more we do, the more we can do.

Great thoughts reduced to practice become great acts.