If you have had your attention directed to the novelties in thought in your own lifetime, you will have observed that almost all really new ideas have a certain aspect of foolishness when they are first produced, and almost any idea which jogs you out of your current abstractions may be better than nothing.

Problems are only opportunities in disquise.

On the ostensible exactitude of certain branches of human knowledge, including mathematics. The exactness is a fake.

What the learned world tends to offer is one second-hand scrap of information illustrating ideas derived from another second-hand scrap of information. The second-handedness of the learned world is the secret of its mediocrity.

As society is now constituted, a literal adherence to the moral precepts scattered throughout the Gospels would mean sudden death.

Do not teach too many subjects and what you teach, teach thoroughly.

No science can be more secure than the unconscious metaphysics which tacitly it presupposes.