Courage without conscience is a wild beast.

All of the Ten Commandments that are good were old; all that were new art foolish. If Jehovah had been civilized he would have left out the commandment about keeping the Sabbath, and in its place would have said: "Thou shalt not enslave thy fellow-men." He would have omitted the one about swearing, and said: "The man shall have but one wife, and the woman but one husband." He would have left out the one about graven images, and in its stead would have said: "Thou shalt not wage wars of extermination, and thou shalt not unsheathe the sword except in self-defence.

Nothing discloses real character like the use of power.

There can be but little liberty on earth while men worship a tyrant in heaven.

It is told that the great Angelo, in decorating a church, painted some angels wearing sandals. A cardinal looking at the picture said to the artist: Whoever saw angels with sandals? Angelo answered with another question: Whoever saw an angel barefooted?

The man who finds a truth lights a torch.

The combined wisdom and genius of all mankind cannot possibly conceive of an argument against liberty of thought.