To lengthen thy life, lessen thy meals.

Read much, but not too many books.

I believe ... that the soul of man is immortal and will be treated with justice in another life, respecting its conduct in this.

Life with Fools consists in Drinking; with the wise Man, living's Thinking.

Eat not to dullness, drink not to elevation.

Life is a kind of chess.

Furnished as all Europe now is with Academies of Science, with nice instruments and the spirit of experiment, the progress of human knowledge will be rapid and discoveries made of which we have at present no conception. I begin to be almost sorry I was born so soon, since I cannot have the happiness of knowing what will be known a hundred years hence.