We — mankind — stand at the center of an evolutionary crisis, with a new evolutionary device — our consciousness of the crisis — as our unique contribution.

In contrast to our own social environment which brings out different aspects of human nature and often demonstrated that behavior which occurs almost invariably in individuals within our society is nevertheless due not to original nature but to social environment; and a homogeneous and simple development of the individual may be studied.

I suddenly realized that through no act of my own I had become biologically related to a new human being.

today's children are the first generation to grow up in a world that has the power to destroy itself.

War is only an invention, not a biological necessity.

Warfare ... is just an invention, older and more widespread than the jury system, but none the less an invention.

Keeping even the most humble talent wrapped in a napkin becomes the more reprehensible the greater the emergency.