This is the second edition. The book has been revised, now it includes seven graphic illustrations.'We by birth belong to the best intelligent System that is available to us for the conduct of life, the implications of which very few people understood. The ones who understood it were the people who spoke of the Truth, the never-ending Reality. They were mainly Zoroaster, Buddha, Christ, and Mohammed after whom the major religions got formed. Our human identity, culture and spirituality depend on our relationship with the World that belongs to the System because the best of our life can be had only in relationship with the System that gave us our life. On the other hand, cultural degradation takes place when consciousness gets conquered by the products we make based on our reasoning. This is because we are not the products of our systems. When human communities were degrading due to their dependence on such parochial systems for the management of life, the rare ones who had the sensibility for the System, demanded that life should be lived on the basis of its System which they called the Truth. The mind that regains relationship with the System is guided by its timeless qualities that stand for culture and spirituality - the highest state of consciousness that is available to us. As a concept it must be called Pure Reason because the mind at this level is not guided by social reasoning. Faith in the System of Life that they demanded is different from the religious faiths that deny intelligence to the followers of the religious faiths. The book defines the Enlightenment Attained by the Prophets as a concept, and the dangers of many of the systems that we have developed due to our alienation from the System worked by the faiths. Pure Reason helps in regaining the true identity of the self that many parochial systems deny us.'