Each person is at each moment capable of remembering all that has ever happened to him and of perceiving everything that is happening everywhere in the universe.

What man has joined, nature is powerless to put asunder.

Man is so intelligent that he feels impelled to invent theories to account for what happens in the world. Unfortunately, he is not quite intelligent enough, in most cases, to find correct explanations. So that when he acts on his theories, he behaves very often like a lunatic.

The critics don't interest me because they're concerned with what's past and done, while I'm concerned with what comes next.

Plasticene and self-expression will not solve the problems of education. Nor will technology and vocational guidance; nor the classics and the Hundred Best Books.

The inconveniences and horrors of the pox are perfectly well known to every one; but still the disease flourishes and spreads. Several million people were killed in a recent war and half the world ruined; but we all busily go on in courses that make another event of the same sort inevitable. Experientia docet? Experientia doesn't.

The moral peril to humanity of thoughtlessly accepting these conveniences [of materialism] (with their inherent disadvantages) as constituting a philosophy of life is now becoming apparent. For the implications of this disruptive materialism... are that human beings are nothing but bodies, animals, machines.