Every intellectual revolution which has ever stirred humanity into greatness has been a passionate protest against inert ideas. Then, alas, with pathetic ignorance of human psychology, it has proceeded by some educational scheme to bind humanity afresh with inert ideas of its own fashioning.

It is natural to think that an abstract science cannot be of much importance in affairs of human life, because it has omitted from its consideration everything of real interest.

Disputing the commonsense notion that all events require the prior existence of some underlying matter or substance. There is no antecedent static cabinet.

The whole of mathematics consists in the organization of a series of aids to the imagination in the process of reasoning.

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

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

The world is shocked, or amused, by the sight of saintly old people hindering in the name of morality the removal of obvious brutalities from a legal system.