Another important attribute of The Emerald Hills of the Heart, at least as important as the other attributes mentioned above, if not more so, is that it presents the Islamic spiritual life that constitutes the core of Islam not as a theoretical subject but as lived by the Companions of the Prophet. It presents this life as a profound experience of the heart, mind, and body described and appointed by Islam. It also investigates how it has taken shape throughout history. The Emerald Hills of the Heart bequeaths to future ages —a time in which perhaps apparently different realms of religion and reason, science, technology, rhetoric and welfare will, in cooperation, make unprecedented and inconceivable progress— the legacy of Sufism, with all its dimensions, or the spiritual life of Islam in its immense entirety as a safe and sound road that has been protected against all manner of deviations.