That man alone loves himself rightly who procures the greatest possible good to himself through the whole of his existence and so pursues pleasure as not to give for it more than it is worth.

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.

He that lives well, is learned enough.

Blame-all and Praise-all are two blockheads.

The noblest question in the world is: 'What good may I do in it?'

Thinking aloud is a habit which is responsible for most of mankind's misery.

Wars are not paid for in wartime. The bill comes later.