Obstinacy is the result of the will forcing itself into the place of the intellect.

Freedom of the press is to the machinery of the state what the safety valve is to the steam engine.

Many books serve merely to show how many ways there are of being wrong, and how far astray you yourself would go if you followed their guidance. You should read only when your own thoughts dry up.

Anyone can squash a bug but all professors of this world couldn't build one.

Indeed, intolerance is essential only to monotheism; an only God is by nature a jealous God who will not allow another to live. On the other hand, polytheistic gods are naturally tolerant, they live and let live.

There is something in us that is wiser than our head.

The intellectual attainments of a man who thinks for himself resemble a fine painting, where the light and shade are correct, the tone sustained, the colour perfectly hamonized; it is true to life.