Less than fifteen per cent of the people do any original thinking on any subject. The greatest torture in the world for most people is to think.

The time has come for honest men to denounce false teachers and attack false gods.

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.

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

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.

I see humanity now as one vast plant, needing for its highest fulfillment only love, the natural blessings of the great outdoors, and intelligent crossing and selection.

As a scientist, I cannot help feeling that all religions are on a tottering foundation . . . I am an infidel today. I do not believe what had been served to me to believe. I am a doubter, a questioner, a skeptic. When it can be proved to me that there is immortality, that there is resurrection beyond the gates of death, then will I believe. Until then, no.