We cannot of ourselves estimate the degree of our success in what we strive for.

If there is a virtue in the world at which we should always aim, it is cheerfulness.

If aught be worse than failure from overstress of a life's prime purpose, it is to sit down content with a little success.

A life of pleasure makes even the strongest mind frivolous at last.

When you borrow on your character, it is your character that you leave in pawn.

The learned compute that seven hundred and seven millions of millions of vibrations have to penetrate the eye before the eye can distinguish the tints of a violet.

In life, as in art, the beautiful moves in curves.