Each human being is a more complex structure than any social system to which he belongs.

Speak out in acts; the time for words has passed, and only deeds will suffice.

No reason can be given for the nature of God, because that nature is the ground of rationality.

It is impossible not to feel stirred at the thought of the emotions of man at certain historic moments of adventure and discovery - Columbus when he first saw the Western shore, Pizarro when he stared at the Pacific Ocean, Franklin when the electric spark came from the string of his kite, Galileo when he first turned his telescope to the heavens. Such moments are also granted to students in the abstract regions of thought, and high among them must be placed the morning when Descartes lay in bed and invented the method of co-ordinate geometry.

I put forward as a general definition of civilization, that a civilized society is exhibiting the five qualities of Truth, Beauty, Adventure, Art, Peace.

The ultimate metaphysical ground is the creative advance into novelty.

A clash of doctrine is not a disaster, it is an opportunity.