Philosophy, most broadly viewed, is the critical survey of existence from the standpoint of value.

Tolerance always has limits - it cannot tolerate what is itself actively intolerant.

Before impugning an opponent's motives, even when they legitimately may be impugned, answer his arguments.

The difference between science and religion is that the former wishes to get rid of mysteries whereas the latter worships them.

Stupidity is sometimes the greatest of historical forces.

I was guilty of judging capitalism by its operations and socialism by its hopes and aspirations; capitalism by its works and socialism by its literature.

Religious tolerance has developed more as a consequence of the impotence of religions to impose their dogmas on each other than as a consequence of spiritual humility in the quest for understanding first and last things.