As a scientist, I can not help feeling that all religions are on a tottering foundation. None is perfect or inspired.The idea that a good God would send people to a burning hell is utterly damnable to me. I don't want to have anything to do with such a God.

In the span of my own lifetime I observed such wondrous progress in plant evolution that I look forward optimistically to a healthy, happy world as soon as its children are taught the principles of simple and rational living.

Although I went to college as a youth, I never considered it necessary to steep oneself in academic learning, in order to learn how to think. I welcome a fair and square, open and above-board fight on any subject, including this, but I despise a man who sneaks around under a cloak or cover of any society or clique to strike his blows.

Science is knowledge arranged and classified according to truth, facts, and the general laws of nature.

Of course it must, and our scientific men must be criticized boldly. They will not feel comfortable when you and I are through with them.

I am an infidel. I know what an infidel is, and that's what I am.

Thinking is the greatest torture in the world for most people.