(summaru) This article explores the cognition of three sources -sacred book (revelation), nature and human being- of true nature of Idea, that is to say Absolute Truth. The author analyses the well-known philosophers` ideas about Absolute Truth beginning from Ancient time and compares these ideas with S. Khalilov`s conception of the “equivalence of three books”. The author who assumes the unity of Idea and its continuity as a basis, concludes that the salvation way of the West and the East is the right approach to the sources of true nature of the Truth.
Key words: The book of nature, revelation, human being, Absolute Truth, the East, the West.
