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.

Religion can never reform mankind because religion is slavery.

I believe in the gospel of cheerfulness, the gospel of Good Nature; the gospel of Good Health. Let us pay some attention to our bodies. Take care of our bodies, and our souls will take care of themselves.

One good schoolmaster is worth a thousand priests.

The man who invented the telescope found out more about heaven than the closed eyes of prayer ever discovered.

I have no confidence in any religion that can be demonstrated only to children.

Injustice upon earth renders the justice of of heaven impossible.