In any race between human numbers and natural resources, time is against us.

The silent bear no witness against themselves.

...it is not what one has experienced but what one does with what one has experienced that matters.

A type of revolutionary novelty may be extremely beautiful in itself; but, for the creatures of habit that we are, its very novelty tends to make it illegible, at any rate to begin with.

Man is unique in organizing the mass murder of his own species.

The most valuable of all education is the ability to make yourself do the thing you have to do, when it has to be done, whether you like it or not.

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.