One unconsciously takes it for granted that doer and sufferer think and feel alike, and according to this supposition we measure the guilt of the one by the pain of the other.

The finest and healthiest thing about science is, as in the mountains, the brisk air blowing around in it.--The spiritually delicate (such as artists) shun and slander science owing to this air.

Love is a state in which a man sees things most decidedly as they are not.

To be the equal of one's opponent-this is the first condition of an honourable duel.

It is not things, but opinions about things that have absolutely no existence, which have so deranged mankind!

Everything good is instinct--and, as a result, easy, necessary, free.

Who is better, they who promote truth over happiness, or happiness over truth?