Happiness is the only good. The time to be happy is now. The place to be happy is here. The way to be happy is to make others so.

Catholicism is contrary to human liberty. Catholicism bases salvation upon belief. Catholicism teaches man to trample his reason under foot. And for that reason it is wrong.

The Catholics have a Pope. Protestants laugh at them, and yet the Pope is capable of intellectual advancement. In addition to this, the Pope is mortal, and the church cannot be afflicted with the same idiot forever. The Protestants have a book for their Pope. The book cannot advance. Year after year, and century after century, the book remains as ignorant as ever.

The glory of science is, that it is freeing the soul, breaking the mental manacles, getting the brain out of bondage, giving courage to thought, filling the world with mercy, justice, and joy.

I thank thee, Mother Nature, that thou hast put ingenuity enough in the brain of a child, when attacked by a brutal parent, to throw up a little breastwork in the shape of a lie.

Liberty sustains the same relation to mind that space does to matter.

Either god should have written a book to fit my brain, or he should have made my brain to fit his book.