"The greatest part of our knowledge is founded on observation and experience."

"God, when he gave the world to men in common, commanded man also to labour, and the penury of his condition required it of him."

"It is not the business of the law to make men good, but to keep them from being bad."

"The business of men is to be happy; but in this world, I think it is enough if we can avoid being miserable."

"Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours."