The purest expression of the doctrine of Liberalism was probably that of Benjamin Constant

Darwin, Marx, and Freud meet. They may have understood other things, but the human soul, and in particular the soul of Culture-man, they did not understand. Systems like theirs are only historical curiosities to the 20th century, unless they happen to claim to be appropriate descriptions of Reality. Anyone who believes in these antiquated fantasies stamps himself as ludicrous, posthumous, ineffective, and superfluous. No leading men of the coming decades will be Darwinians, Marxians or Freudians.

Every non-political human grouping of whatever kind, legal, social, religious, economic or other becomes at last political if it creates an opposition deep enough to range men against one another as enemies

Alliance does not mean love, any more than war means hate

The important part of Marxism was its demand for active, constant, practical, class-war

Every science is a profane restatement of the preceding dogmas of the religious period

For us there is but one crime: to be untrue to ourselves.