What is the use of assuring Fundamentalists that science is compatible with religion. They retort at once, Certainly not with our religion.

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.

Obsolete misleading theologies bear the same relation to the essence of true religion that scarlet fever, mumps, and measles do to education.

The secret of improved plant breeding, apart from scientific knowledge, is love.

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

The lure of happiness and the fear of pain . . . are the two forces which have through untold millenniums kept what we usually call life from destruction by the ever encroaching outside forces of destruction.

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