Carefull ... t's all too easy to wander into paradox territory here. Consider the following imaginary conversation.

Mr Right-On: "I believe we should tolerate everything … except intolerance, of course."

Ms Sceptical:   "So, you are intolerant of intolerance? "

Mr Right-On: "Absolutely!"

Ms Sceptical: "Then does it not follow logically that you cannot tolerate yourself?"

"Mr Right-On: "Er ... next question please."

Rather than demanding that everyone we disagree with must be silenced, I suggest that we repeat the remark made by an 18th century French philosopher to a bitter enemy: "I detest what you say Sir, but I will defend to the death your right to say it."   (Though with the reservation that freedom of speech does not permit us to shout "Fire" in a crowded theatre – unless there really is a fire.)

Wassail!