We will peck them to death to-morrow, my dear.

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

When she was fifteen if you'd told her that when she was twenty she'd be going to bed with bald-headed men and liking it, she would have thought you very abstract.

I believe that now and always the conscious selection of the best for reproduction will be impossible; that to propose it is to display a fundamental misunderstanding of what individuality implies. The way of nature has always been to slay the hindmost, and there is still no other way, unless we can prevent those who would become the hindmost being born. It is in the sterilization of failure, and not in the selection of successes for breeding, that the possibility of an improvement of the human stock lies.

There is no more evil thing in this world than race prejudice, none at all. [...] It justifies and holds together more baseness, cruelty, and abomination than any other sort of error in the world.

There is no difference between Time and any of the three dimensions of Space except that our consciousness moves along it.

Science has toiled too long forging weapons for fools to use. It is time she held her hand.