We ought to really at least recognize the common predicament of Communists and democrats - or Americans, whatever.

It's always wise to seek the truth in our opponents' error, and the error in our own truth.

The history of mankind is a perennial tragedy; for the highest ideals which the individual may project are ideals which he can never realize in social and collective terms.

The society in which each man lives is at once the basis for, and the nemesis of, that fulness of life which each man seeks.

The mastery of nature is vainly believed to be an adequate substitute for self mastery.

To be religious is not to feel, but to be.

The scientific observer of the realm of nature is in a sense naturally and inevitably disinterested. At least, nothing in the natural scene can arouse his bias. Furthermore, he stands completely outside of the natural so that his mind, whatever his limitations, approximates pure mind. The observer of the realm of history cannot be disinterested in the same way, for two reasons: first, he must look at history from some locus in history; secondly, he is to a certain degree engaged in its ideological conflicts.