This text discusses the lives and ideas of three celebrated Islamic thinkers, during the period stretching from the flourishing of the philosophical sciences to the sacking of Baghdad by the Mongols: al-Farabi (870-950), al-Ghazali (1058-1111) and Qutb al-Din al-Shirazi (1236-1311).

Osman Bakars Classification of Knowledge in Islam is the first work of its kind in the English language and is based on extensive scholarships and reference to the original texts.

Part One: Al-Farabi
1.The Life, Works and Significance of al-Farabi
2.Al-Farabis Psychology in its Relation to the Hierarchy of the Sciences
3.The Methodological Basis of the Hierarchy of the Sciences
4.The Ontological and Ethical Bases of the Hierarchy of the Sciences
5.Classification and Description of Linguistic Science and Logic
6.Classification and Description of the Philosophical Sciences
Part Two: Al-Ghazzali
1.The Life, Works and Significance of al-Ghazzali
2.Al-Ghazzalis Classification of Seekers after Knowledge
3.Al-Ghazzali Classification of the Sciences
Part Three: Qutb al-Din al-Shirazi
1.The Life, Works and Significance of Qutb al-Din al-Shirazi
2.Qutb al-Dins Classification of the Sciences.