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 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.

Christianity did not come with tidings of great joy, but with a message of eternal grief. It came with the threat of everlasting torture on its lips. It meant war on earth and perdition hereafter.

There is no slavery but ignorance.

Secularism is a religion, a religion that is understood. It has no mysteries, no mumblings, no priests, no ceremonies, no falsehoods, no miracles, and no persecutions.

Most people can bear adversity. But if you wish to know what a man really is, give him power.

He who commends the brutalities of the past, sows the seeds of future crimes.