Book excerpt: The Quran is an exceptional book. It is the holy book of Islam and, most importantly, is considered as the literal words (verbatim) of God and not a human inspired text. Its content encompasses a wide range of subjects: information about God, arguments about His existence and Unity, the Creation, the evidences for that, moral values, prescription about the relationship of Man to God, messages about human destiny such as the hereafter, life after death. These subjects are also linked to the questions of the purpose of life, of man's existence, to which the Quran provides clarifications and answers. The Quran is a book that provides both guidance and moral references to men and senses to life and existence.It is a highly specific and subtle book in every aspect and it will be shown that the Quran (along with the Prophet Muhammed tradition) is, in fact, a message of wisdom, tolerance and moral improvement for humankind, to all the people.The purpose of this book is, first to present concisely the main lines of the message and parts of the wisdom contained in the Quran, and second to provide an introduction that helps for an exhaustive reading of the Text.