Free societies...are societies in motion, and with motion comes tension, dissent, friction. Free people strike sparks, and those sparks are the best evidence of freedom's existence.

The moment you say that any idea system is sacred, whether it’s a religious belief system or a secular ideology, the moment you declare a set of ideas to be immune from criticism, satire, derision, or contempt, freedom of thought becomes impossible."[Defend the right to be offended (openDemocracy, 7 February 2005)]

What is freedom of expression? Without the freedom to offend, it ceases to exist.

It was, for him, an object lesson in the importance of the “better out than in” free speech argument—that it was better to allow even the most reprehensible speech than to sweep it under the carpet, better to publicly contest and perhaps deride what was loathsome than to give it the glamour of taboo, and that, for the most part, people could be trusted to tell the good from the bad.

Free speech is life itself.