I do not agree with what you have to say, but I'll defend to the death your right to say it.
Voltaire
Noble thought but have you noticed that the people who generally quote this are the ones who even while defending 'to the death your right' to differ will try to put you down, or give examples to show how wrong you are anyway, and how right they are, anyway. How many people can actually take another person's differing point of view with grace, and then leave it be and not feel the need to either defend their point of view, or point out the errors in yours?