Pt. I. Quranic Islam and the secular mind -- Locating Islam in the modern world -- Human reason and divine revelation -- The moral challenge of secular humanism -- Pt. II. An Arabic Quran: assessing its authority -- The book sent down -- The book as the frustrater -- The scope of the book -- The authority of the book -- Pt. III. A Quranic Lebenswelt in a secular age -- A sign is enough - for the wise -- Faith and the varieties of rejection -- Human nature and the Quran -- greater is God! -- Pt. IV. Conclusions -- Preface to a philosophy of Islam.