in addition to the conditions under which life is given to man on earth, and partly out of them, men constantly create their own, self-made conditions, which, their human origins notwithstanding, possess the same conditioning power as natural things. whatever touches or enters into a sustained relationship with human life immediately assumes the character of a condition of human existence. this is why men, no matter what they do, are always conditioned beings. whatever enters the human world of its own accord or is drawn into it by human effort becomes part of the human condition.

The more dubious and uncertain an instrument violence has become in international relations, the more it has gained in reputation and appeal in domestic affairs, specifically in the matter of revolution.

Conscience is the anticipation of the fellow who awaits you if and when you come home.

Opinions are formed in a process of open discussion and public debate, and where no opportunity for the forming of opinions exists, there may be moods -moods of the masses and moods of individuals, the latter no less fickle and unreliable than the former -but no opinion.

Our tradition of political thought had its definite beginning in the teachings of Plato and Aristotle. I believe it came to a no less definite end in the theories of Karl Marx.

Loving life is easy when you are abroad. Where no one knows you and you hold your life in your hands all alone, you are more master of yourself than at any other time

Men in plural […] can experience meaningfulness only because they can talk with and make sense to each other and themselves.