Flip Spagnoli on No Tolerance for IntoleranceMaking Human Rights Real (Algora Publishing: 2007), p. 125.
Unlimited tolerance — tolerance even of intolerance — destroys itself, or at least helps those who want to destroy it. A tolerant society disappears if it tolerates certain things for too long. Intolerant people can use tolerance and the institutions of tolerance in order to destroy tolerance. It is unreasonable to demand that a system — in this case a tolerant system — contains the seeds of its own destruction. One cannot reasonably impose fatal contradictions upon a system, so one cannot impose tolerance for intolerance. … Only tolerance and, at most, theoretical intolerance can be tolerated. Tolerating violations of human rights is a logical contradiction, because human rights guarantee tolerance and because tolerance guarantees human rights. If you want to enjoy the benefits of tolerance — for example as a means to protect your own opinions — then you have to respect human rights. Tolerance and human rights go together. You cannot choose one without the other. You cannot violate human rights and expect to be tolerated, no more than you can claim rights and reject tolerance. Rights without tolerance are nonsense, because tolerance protects the use of rights.