Religion supports nobody. It has to be supported. It produces no wheat, no corn; it ploughs no land; it fells no forests. It is a perpetual mendicant. It lives on the labors of others, and then has the arrogance to pretend that it supports the giver.

Every child should be taught that useful work is worship and that intelligent labor is the highest form of prayer.

I am anxious to give away information, for it is only by giving it away that you can keep it. When you have told it, you remember it. It is with information as it is with liberty, the only way to be dead sure of it is to give it to other people.

A fact never went into partnership with a miracle. Truth scorns the assistance of wonders. A fact will fit every other fact in the universe, and that is how you can tell whether it is or is not a fact. A lie will not fit anything except another lie.

Shakespeare has done far more for the world than the Bible.

The more a man knows, the more willing he is to learn-the less a man knows, the more positive he is that he knows everything.

Twenty years after the death of Luther there were more Catholics than when he was born. And twenty years after the death of Voltaire there were millions less than when he was born.