Leisure is the time for doing something useful.

That as we enjoy great advantages from the inventions of others, we should be glad of an opportunity to serve others by any invention of ours, and this we should do freely and generously.

To be humble to superiors is a duty, to equals courtesy, to inferiors nobleness.

Most people dislike vanity in others, whatever share they have of it themselves; but I give it fair quarter, wherever I meet with it, being persuaded that it is often productive of good to the possessor, and to others who are within his sphere of action: and therefore, in many cases, it would not be altogether absurd if a man were to thank God for his vanity among the other comforts of life.

The way to wealth is as plain as the way to market. It depends chiefly on two words, industry and frugality: that is, waste neither time nor money, but make the best use of both. Without industry and frugality nothing will do, and with them everything.

He that is conscious of a stink in his breeches is [suspicious] of every wrinkle in another's nose.

Doing an injury puts you below your enemy; revenging one make you but even with him; forgiving it sets you above him.