When ideas fail, words come in very handy.

Willing is not enough, we must do.

First and last, what is demanded of genius is love of truth.

It is only necessary to grow old to become more charitable and even indulgent. I see no fault committed by others that I have not committed myself.

Most man only care for science so far as they get a living by it, and that they worship even error when it affords them a subsistence.

If you want to get pleasure out of life, you must attach value to the world.

What in us the women leave uncultivated, children cultivate when we retain them near us.