States organized for war will make war as surely as hens will lay eggs.

The only true measure of success is the ratio between what we might have done and what we might have been on the one hand, and the thing we have made and the things we have made of ourselves on the other.

In all ages, far back into prehistory, we find human beings have painted and adorned themselves.

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.

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.

A young mistress is better than an old master.

I doubt if these two fine, active minds [President and Mrs. Roosevelt] have ever inquiried how it is they know what they know and think as they do. Nor have they ever thought of what they might have been if they had grown up in an entirely different culture. They have the disposition of all politicians world over to deal only with made opinion. They have never inquired how it is that opinion is made.