The reasonable man will adjust to the demands of his environment. The unreasonable man expects his environment to adjust to his own needs. Therefore, all progress depends upon the unreasonable man.

Every man is a revolutionist concerning the thing he understands. For example, every person who has mastered a profession is a skeptic concerning it, and consequently a revolutionist.

The worst sin... is... to be indifferent.

If we have come to think that the nursery and the kitchen are the natural sphere of a woman, we have done so exactly as English children come to think that a cage is the natural sphere of a parrot: because they have never seen one anywhere else.

Alcohol is the anesthesia by which we endure the operation of life.

Choose silence of all virtues, for by it you hear other men's imperfections, and conceal your own.

If parents would only realize how they bore their children.