• Unlimited tolerance must lead to the disappearance of tolerance. If we extend unlimited tolerance even to those who are intolerant, if we are not prepared to defend a tolerant society, then the tolerant will be destroyed, and tolerance with them. We should therefore claim, in the name of tolerance, the right not to tolerate the intolerant.

    "The Open Society and Its Enemies". Book by Karl Popper, Volume 1. Notes to Chapter 7, Note 4, 1945.