The first Arabic edition, Al-Tafakkur min al-Mushāhadah ila alShuhūd, which was published in Cairo in 1991, generated a very positive response and at times spirited remarks from scholars. Some admitted that the book had greatly improved their practice of worship and believed that it would have the same effect on others. Since then, the book has been reprinted and has been reviewed favorably in various professional journals that have considered it a best seller. It has also been used as a postgraduate reference for Islamic psychology and education in various Arab universities. We hope that this English edition, with its ground-breaking paradigm and ideas, will not only make an important contribution to the field of the Islamization of the behavioral sciences, but also attract wider attention and generate greater interest among specialists to analyze and further develop the ideas and theories presented and discussed.