All known existence points beyond itself.

It is my strong conviction that a realist conception of human nature should be made a servant of an ethic of progressive justice and should not be made into a bastion of conservatism, particularly a conservatism which defends unjust privileges.

Aim for the stars and maybe you'll reach the sky.

Toleration of people who differ in convictions and habits requires a residual awareness of the complexity of truth and the possibility of opposing view having some light on one or the other facet of a many-sided truth.

There has been a religious revival because - let me put it like this, the people that weren't traditionally religious, conventionally religious, had a religion of their own in my youth. These were liberals who believed in the idea of progress or they were Marxists. Both of these secular religions have broken down.

Reason is not the sole basis of moral virtue in man. His social impulses are more deeply rooted than his rational life.

There was a time when I had all the answers. My real growth began when I discovered that the questions to which I had the answers were not the important questions.