A Professor at Tehran University, Mehdi Ha'iri Yazdi is one of the leading Muslim philosophers. He has a deep and wide understanding of Medieval Islamic Philosophy as well as knowledge of modern analytical techniques and methods. He is the author of Kavushha-yeh 'Aql-i Naz and of Hiram-i Hasti.

• Foreword by Seyyed Hossein Nasr Introduction 1. Knowledge by Presence: A History 2. Immanent Object and Transitive Object 3. Knowledge by Presence and Knowledge by Correspondence 4. An Empirical Dimension of Knowledge by Presence 4. The Prime Mode of Knowledge by Presence 6. An Appendix to the Theory of Knowledge by Presence 7. An Expanded Theory of Knowledge by Presence: Mysticism in General 8. Mysticism in the System of Emanation 9. Mystical Unity 10. The Language of Mysticism and Metamysticism Appendix Notes Bibliography Index

"Ha'iri does not fall back on value-laden spiritual arguments. He carefully demonstrates to the trained analytical philosopher that presence-knowledge is a viable and meaningful epistemological mode. The book is by a philosopher written for philosophers. In addition to Muslim philosophers, the book also refers to Plato, Aristotle, Plotinus, St. Thomas, Russell, Cunningham, and other western thinkers." — Hossein Ziai, UCLA"The book is written by an eminent authority on Islamic Philosophy who is equally well versed in European philosophy. The book is a significant contribution to both Islamic philosophy and to comparative philosophy." — Hamid Dabashi, Harvard University"This is the first serious work we have in English written by a Muslim philosopher as Islamic philosophy. It offers important contributions to contemporary philosophical concerns." — William C. Chittick, State University of New York, Stony Brook