Harun Yahya is a pen name used by Mr. Adnan Oktar.

Born in Ankara in 1956, Adnan Oktar is a prominent Turkish intellectual. Completely devoted to moral values and dedicated to communicating the sacred values he cherishes to other people, Oktar started his intellectual struggle in 1979 during his education at Mimar Sinan University's Academy of Fine Arts. During his university years, he carried out detailed research into the prevalent materialistic philosophies and ideologies around him, to the extent of becoming even more knowledgeable about them than their advocates. As a result of his accumulation of knowledge, he has written various books on the fallacy of the theory of evolution. His dedicated intellectual effort against Darwinism and materialism has grown out to be a worldwide phenomenon. Quoting from the 22 April 2000 issue of New Scientist, Mr. Oktar became an "international hero" in communicating the fallacy of the theory of evolution and the fact of creation. The author’s intellectual struggle against materialism and Darwinism has frequently been mentioned in such mainly evolutionist publications as National Geographic, Science, New Scientist and NSCE Reports. The English and German editions of the November, 2004, issue of National Geographic referred to the author’s works concerning the Fact of Creation. The following quotation from the book The Evolution Deceit was also included: “The theory of evolution is nothing but a deception imposed on us by the dominators of the world system.” The author has also produced various works on Zionist racism and Freemasonry and their negative effects on world history and politics. The Zionism criticised by the author in his books is the baseless claims of Zionist extremists who pretend to world sovereignty, regard other human beings as worthless entities, maintain that the Jews are the chosen people and that God is theirs alone. Yet the author's writings very definitely do not imply a rejection of the Jews' right to live in peace and security within the borders of their own state.

Besides these, Oktar has written more than a hundred books describing the morals of the Qur'an and faith related issues.

His pen-name, Harun Yahya, is formed from the names "Harun" (Aaron) and "Yahya" (John) in the esteemed memory of the two Prophets who struggled against infidelity.

Many works of Harun Yahya are being currently translated into English, French, German, Italian, Russian, Spanish, Arabic, Portuguese, Albanian, Serbo-Croat (Bosnian), Polish, Urdu, Indonesian, Kazakh, Azeri, Malay and Malayalam. The target is to translate all books into English and many other languages in the near future, and thus to make them available for the benefit of all people.

The common point in all the writer's works is that all the topics covered by his works are in full agreement with the Qur'an, and strongly affirmed by Qur'anic understanding. Even the topics addressed by science and mostly considered complicated and confusing are narrated very lucidly and explicitly in the books of Harun Yahya. For this reason, these books appeal to everyone, from every age and social group.

Harun Yahya's books on faith-related topics communicate the existence and oneness of God and are written with the main purpose of introducing Islam to those who are strangers to religion, and reconciling their hearts to the truth. For Muslims, these books are advice as well as a reminder. The writer has published works on all the basic issues referred to in the Qur'an that expand the dedication and contemplation of Muslims.

Each of the author's books on science-related topics stresses the might, sublimity, and majesty of God in minute detail based on well-structured research and evidence, along with extensive contemplation. These books display, for non-Muslims, the signs of the existence of God, and the excellence of His creation in a very explicit and precise way. On the other hand, they add to the faith and submission of believers, and can serve as perfect materials for communicating Islam to other people (where religion is not practiced in its full sense). A sub-group within this series are the "Books Demolishing the Lie of Evolution." The main purpose of these books is to demolish the materialistic and atheistic philosophy which has been put forward as an alternative and rival to religion and has been imposed on the whole world since the 19th century. The great impact the books make on readers signifies that this purpose is fulfilled to a great extent. These books, just as it is stated in the Qur'an in the words "We hurl the Truth against falsehood, and it knocks out its brain" (Surat al-Anbiya’, 18), demolish the brain, i.e., the thought system and ideology of the faithless system; and help complete (the revelation of) God's light (Surat as-Saff, 8). For these reasons, these books play a significant role in the intellectual war against non-belief.

The symbolic meaning of the seal of the Prophet Muhammed (May God bless him and grant him peace) on the covers of all of the books by the writer is related to the content of the books. This seal is an indication that the Qur'an is the last book and the last word of God, and our Prophet Muhammad (May God bless him and grant him peace) is the last of His messengers. By taking this attribute of the Qur'an and the Prophet, the writer seeks, in all of his works, to refute all the basic claims of the systems of disbelief and utter the "last word" which will put a definite end to the assertions of infidelity. The stamp of the Prophet Muhammed (May God bless him and grant him peace) who has the greatest honour and wisdom, is used as a prayer for the intention of saying this last word.

A Further Note on The Books of Harun Yahya

In all the books by the author, faith-related issues are explained in the light of the Qur'anic verses and the Hadith and people are invited to learn God's words and to live by them. All the subjects that concern God's verses are explained in such a way as to leave no room for doubt or question marks in the reader's mind. The sincere, plain and fluent style employed ensures that everyone of every age and from every social group can easily understand the books. This effective and lucid narrative makes it possible to read them in a single sitting. Even those who rigorously reject spirituality are influenced by the facts recounted in these books and cannot refute the truthfulness of their contents.

All the books of the author can be read individually or discussed in a group at a time of conversation. Those readers who are willing to profit from the books will find discussion very useful in the sense that they will be able to relate their own reflections and experiences to one another.

In addition, it will be a great service to the religion to contribute to the presentation and reading of these books, which are written solely for the good pleasure of God. All the books of the author are extremely convincing. For this reason, for those who want to communicate the religion to other people, one of the most effective methods is to encourage them to read these books.

You will not find, as in some other books, the personal views of the author, explanations based on dubious sources, styles that are unobservant of the respect and reverence due to sacred subjects, nor hopeless, doubt-creating, and pessimistic accounts that create deviations in the heart.