A philosophy teacher today described how he was forced into hiding after a newspaper article in which he attacked Islam provoked death threats against himself and his family.

Robert Redeker, 52, from Toulouse in south-west France, is receiving round-the-clock police protection and changing addresses every two days, after publishing an article describing the Koran as a "book of extraordinary violence" and Islam as "a religion which ... exalts violence and hate".

He told French media today that he had no regrets about writing the article and that it was part of his job as a philosophy teacher to ask difficult questions.

In an interview with i-TV he said that he had received several e-mail threats targeting himself and his wife and three children and that his photograph and address were available on several Islamist internet sites.

"There is a very clear map of how to get to my home, with the words: ’This pig must have his head cut off’," he said.

Another e-mail says: "You will never again be safe on this earth. One billion, 300 million Muslims are ready to kill you."

And interviewed over the telephone from a safe house by Europe 1 radio, he complained that the education ministry had left him alone and abandoned. He said the ministry "has not even contacted me, has not deigned to get in touch to see if I need any help."

He accepted that his detractors had "already won a victory of sorts."

"I cannot do my job. I have no freedom of movement. I am in hiding. Already they have succeeded in punishing me ... as if I was guilty of holding the wrong opinions."

Dominique de Villepin, the French Prime Minister, said that the threats were "unacceptable".

He said: "We are in a democracy, everyone has the right to express his views freely -- of course while respecting others. That is the only restriction that is acceptable on this freedom.

"This shows to what extent we live in a dangerous world... and how vigilant we must be to ensure people fully respect one another in our society."

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