The 66-year-old British Indian novelist and essayist was forced into hiding after Ayatollah Khomeini, the then Iranian spiritual leader, issued a fatwa of death against him in 1989 following the publication of his book 'The Satanic Verses'.
"It wasn't so much therapeutic as more being bloody-minded. My view is that if someone is trying to shut you up, you shout louder," the author told a gathering at the Edinburgh International Book Festival yesterday.
'The Satanic Verses' was branded blasphemous by conservative Muslims and led to bombings of book shops and the killing of one of Rushdie's translators while another was seriously injured after being attacked.
He ascribed the new hatred to the fall of Communism and the rise of religious fanaticism, among other things.
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"Instead of there being one Iron Curtain, there became lots and lots of little enclaves with people fighting to the death about their own little mindset or their own tribalism," Rushdie said.
"Conservative Muslim leaders had not liked any of my books. So I expected them not to like it. And my view was, 'So what?' It's not compulsory to read a novel. If you don't want to read a book, don't read it. If you start reading a book and you don't like it, you always have the option of shutting it and at this point it loses its capacity to offend you," he said.
It includes anecdotes of the nine years he spent hidden away, protected by armoured police vehicles in various parts of Britain.