Ideas, as distinguished from events, are never unprecedented.

every thought is strictly speaking an after-thought.

Scientific and philosophic truth have parted company.

To be free in an age like ours, one must be in a position of authority. That in itself would be enough to make me ambitious.

Philosophy is called upon to compensate for the frustrations of politics and, more generally, of life itself.

The good things in history are usually of very short duration, but afterward have a decisive influence on what happens over long periods of time.

If we don't know our own history, we are deemed to live it.