The brain upon which my experiences have been written is not a particularly good one. If their were brain-shows, as there are cat and dog shows, I doubt if it would get even a third class prize.

It is not reasonable that those who gamble with men's lives should not stake their own.

Alexander the Great changed a few boundaries and killed a few men. Both he and Napoleon were forced into fame by circumstances outside of themselves and by currents of the time, but Margaret Sanger made currents and circumstances. When the history of our civilization is written, it will be a biological history and Margaret Sanger will be its heroine.

Man ... can go up against gravitation in a balloon, and why should he not hope that ultimately he may be able to stop or accelerate his drift along the Time-Dimension, or even turn about and travel the other way.

Books-bright windows in this life of ours, lit by the shining souls of men.

Every time Europe looks across the Atlantic to see the American Eagle, it observes only the rear end of an ostrich.

Beauty is in the heart of the beholder.