Idealism, alas, does not protect one from ignorance, dogmatism, and foolishness.
If one shoots at a king, one must not miss.
The next time anyone asks you "What is Bertrand Russell's philosophy?" the correct answer is "What year, please?"
Fear of death has been the greatest ally of tyranny past and present.
Tolerance always has limits - it cannot tolerate what is itself actively intolerant.
Religious freedom in an open society has the best prospects of flourishing to the extent that it expresses itself as freedom of religious inquiry.