"I think it is a rule that men in business should not be taught other things. Any one will be almost sure to make money who has no other idea in his head. A college education, or intense study of abstract truth, will not enable a man to drive a bargain … The best politicians are not those who are deeply grounded in mathematical or in ethical science. Rules stand in the way of expediency. Many a man has been hindered from pushing his fortune in the world by an early cultivation of his moral sense."

“What I mean by living to one's-self is living in the world, as in it, not of it: it is as if no one know there was such a person, and you wished no one to know it: it is to be a silent spectator of the mighty scene of things, not an object of attention or curiosity in it; to take a thoughtful, anxious interest in what is passing in the world, but not to feel the slightest inclination to make or meddle with it.”

“We are not hypocrites in our sleep.”

“An honest man speaks the truth, though it may give offence; a vain man, in order that it may.”

“It is better to be able neither to read nor write than to be able to do nothing else.”

“Unlimited power is helpless, as arbitrary power is capricious. Our energy is in proportion to the resistance it meets. We can attempt nothing great, but from a sense of the difficulties we have to encounter: we can persevere in nothing great, but from a pride in overcoming them.”

“A scholar is like a book written in a dead language — it is not every one that can read in it.”