There are two things that kill a genius - a fatal disease and contentment.

The purpose of life is to live it.

I had a vivid imagination. Not only could I put myself in the other person's place, but I could not avoid doing so. My sympathies always went out to the weak, the suffering, and the poor. Realizing their sorrows I tried to relieve them in order that I myself might be relieved.

If there is a soul, what is it, and where did it come from, and where does it go? Can anyone who is guided by his reason possibly imagine a soul independent of a body, or the place of its residence, or the character of it, or anything concerning it? If man is justified in any belief or disbelief on any subject, he is warranted in the disbelief in a soul. Not one scrap of evidence exists to prove any such impossible thing.

Religion is based on the insistence that over and above all is a purpose and a guiding hand that is beneficent and kind, and would not leave a hair unnumbered or let a sparrow fall unnoticed to the ground. Those who cherish such hallucinations forget that the all-loving power is inflicting tuberculosis, cancer, famine, and pestilence on the trusting, simple sons of men.

Each child should be more intelligent than his parents.

The truth is always modern and there never comes a time when it is safe to give it voice.