Tolerance always has limits - it cannot tolerate what is itself actively intolerant.
In contrast to totalitarianism, democracy can face and live with the truth about itself.
Idealism, alas, does not protect one from ignorance, dogmatism, and foolishness.
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.
Stupidity is sometimes the greatest of historical forces.