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.

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

All my work has come about through a change in my earlier opinion of religion.

As a scientist I cannot help feeling that all religions are on a tottering foundation. None is perfect or inspired. As for their prophets, there are as many today as ever before, only now science refuses to let them overstep the bounds of common sense.

If you violate Nature's laws you are your own prosecuting attorney, judge, jury, and hangman.

We must return to nature and nature's god.

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