Hope is a prodigal young heir, and experience is his banker.

Is there anything more tedious than the often repeated tales of the old and forgetful?

He that studies only men will get the body of knowledge without the soul; and he that studies only books, the soul without the body.

We are ruined, not by what we really want, but by what we think we do; therefore never go abroad in search of your wants; if they be real wants, they will come home in search of you; for he that buys what he does not want, will soon want what he cannot buy.

For one man who sincerely pities our misfortunes, there are a thousand who sincerely hate our success.

Professors in every branch of the sciences, prefer their own theories to truth: the reason is that their theories are private property, but truth is common stock.

Some read to think, these are rare; some to write, these are common; and some read to talk, and these form the great majority.