Shall I tell you the secret of the true scholar? It is this: Every man I meet is my master in some point, and in that I learn of him.

The imagination is not a talent of some men but is the health of every man.

Each man is a hero and an oracle to somebody.

A good symbol is the best argument, and is a missionary to persuade thousands.

Science does not know its debt to imagination.

By necessity, by proclivity, and by delight, we all quote.

Next to the originator of a good sentence is the first quoter of it.