“Unlimited tolerance must lead to the disappearance of tolerance,” he wrote. “If we extend unlimited tolerance even to those who are intolerant, if we are not prepared to defend a tolerant society against the onslaught of the intolerant, then the tolerant will be destroyed, and tolerance with them.”
There’s a problem in this is that there is an easy trick you can play with this logic whereby anyone you don’t wish to tolerate needs only to be accused of intolerance first.
Rather, the measure for tolerating something or not should not depend on whether it is tolerant or not. Rather it should be based on whether or not it is tolerable, which obviously is not the same thing.