His glossy books and DVDs on religion and science sell in Islamic bookshops around the globe. He gives away thousands of expensive volumes and lets readers download much of his work from his websites for free.
The Council of Europe accuses him of trying to infiltrate schools with religious extremism and French teachers are told to keep his work from their students.
Unknown outside Muslim circles two years ago, Adnan Oktar - the 52-year-old Turk behind the pseudonym Harun Yahya - caught the attention of scientists and teachers in Europe and North America by mass-mailing them his 768-page "Atlas of Creation".
His lavishly illustrated book preaches a Muslim version of creationism, the view scientists usually hear from Christian fundamentalists who say God created all life on earth just as it is today and oppose the teaching of Darwin's evolution theory.
"Every academic I know says they've got one of those," retired University of Edinburgh natural history professor Aubrey Manning told the Glasgow Herald when "The Atlas" turned up in Scotland early this year."And it's peddling an absolute, downright lie."
But Oktar, whose reclusive ways and opaque business have prompted many rumours about why and how he gives away so many books, brushed off all criticism in a rare interview with Reuters.
"This huge impact shows the influence of the book," the author, stylishly turned out in a white suit, red tie and clipped beard, said through an interpreter.
PR STRATEGY
The controversy stirred up by "The Atlas" has turned the spotlight on a publishing empire that boasts about 260 books in 52 languages, over 80 DVDs and dozens of websites.
Well-illustrated and free of theological jargon, they preach that Islam is the one true faith and Darwinism, by undermining religious belief, has led to the discord, atheism, terrorism and extreme political ideologies plaguing the world.
Reader-friendly, the books appeal to Muslims trying to square modern science with their faith in an inerrant Koran, much like Christian evangelicals who read the Bible literally and support creationism or intelligent design theories.
Oktar offers his works for free download, even the huge Atlas which in printed form sells for $99 on his website. His other printed books are standard size and sell at more modest prices.
The flood of free books prompted suspicion among baffled Western scientists and teachers that U.S. creationists or Saudi financiers might be helping finance the campaign.
