A theology which is not based on revelation as a given reality but treats God as an idea would be as mad as a zoology which is no longer sure of the physical, tangible existence of animals.

His [Marx's] most explosive and indeed most original contribution to the cause of revolution was that he interpreted the compelling needs of mass poverty in political terms as an uprising, not for the sake of bread or wealth, but for the sake of freedom as well.

To be sure, nothing is more important to the integrity of the universities . . . than a rigorously enforced divorce from war-oriented research and all connected enterprises.

When evil is allowed to compete with good, evil has an emotional populist appeal that wins out unless good men and women stand as a vanguard against abuse.

Exactly for the sake of what is new and revolutionary in every child, education must be conservative; it must preserve this newness and introduce it as a new thing into an old world.

The blessing of life as a wholecan never be found in work.

Economic growth may one day turn out to be a curse rather than a good, and under no conditions can it either lead into freedom or constitute a proof for its existence.