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(prō`kləs), 410?–485, Neoplatonic philosopher, b. Constantinople. He studied at Alexandria and at Athens, where he was a pupil of the Platonist Syrianus, whom he succeeded as a teacher. As a partisan of paganism he was forced to leave Athens, but he returned at the end of a year. A synthesizer of Neoplatonic doctrines, Proclus gave the philosophy its most systematic form. He kept the elements of Plotinus, but introduced a principle of triadic development in the series of emanations; the three stages are an original, an emergence from the original, and a return in a lower form to the original. Proclus differed from Plotinus in regard to the origin of matter, which he held to emerge from the first emanation rather than from the plastic forces. Among his writings are commentaries on several Platonic dialogues and two treatises, On Plato's Theology and Institutes of Theology. See NeoplatonismNeoplatonism
, ancient mystical philosophy based on the doctrines of Plato. Plotinus and the Nature of Neoplatonism

Considered the last of the great pagan philosophies, it was developed by Plotinus (3d cent. A.D.).
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See Fragments of the Lost Writings of Proclus (ed. by R. Navon, tr. by T. Taylor, 1987).



Born circa 410 in Constantinople; died 485 in Athens. Classical idealist philosopher; representative of the Athenian school of Neoplatonism.

The most important of Proclus’ known works include Elements of Theology (most recent edition, Oxford, 1965; Russian translation in A. F. Losev, History of Classical Aesthetics, vol. 3: High Classicism, 1974) and Platonic Theology (most recent edition, Frankfurt am Main, 1960). Also among the most important of his known works are commentaries on the Platonic dialogues Timaeus (vols. 1–3, Leipzig, 1903–06) and Parmenides (most recent edition, 1961).

Proclus is historically important for his universal, constructive dialectical analysis of the entire system of Neoplatonism. All aspects of his philosophy are dominated by the triadic method, which is reducible to the consistent assertion of three elements, the first of which may be described as self-absorption, cause, the absolutely unified One, the existing totality, the paternal principle, or potentiality. The second of the triadic elements is emergence from the self, emanation beyond the limits of the self, causation (activity connecting the self with reality distinct from the self), the transition of the unified One into its many appearances, the principle of disintegration, the maternal principle, or energy. The third triadic element is the return from the world of appearances to the self; the emanation of disintegrated plurality into the absolutely unified One, which is infinitely varied within itself; and the eidos, or eternal, all-inclusive (structural) essence. Using the triadic method, Proclus analyzed each member of Plotinus’ universal triad—Unity (the One), the Intelligence (nous), and the Soul. For example, Proclus distinguishes the absolutely unknowable concept of “the One” from that of a “unity” containing a certain degree of plurality but lacking any qualities. The concept of “unity” refers only to the energy of differentiation and disintegration, which precedes Intelligence (differentiation). Proclus was the first Neoplatonist to assign this concept of “unity” to an independent stage of an “emanation” of the One—the realm of numbers, or “superexisting unities.”

Proclus also differentiated three aspects of the concept of “the Intelligence.” The first aspect is the Intelligence as self-absorption, the “intelligible” Intelligence as “being” or object. The second aspect is Intelligence as emergence from the self, the thinking or “intellectual” Intelligence, or Intelligence as subject. The third aspect is Intelligence as the return into the self, as the identity of being and thought or object and subject, and as “life,” “eternity,” or “life in itself.”

In his dialectic of mythology Proclus established three triads of gods. Owing to the triadic division of its first two members, the third triad constituted a group of seven (a hebdomad), each aspect of which was also divided into seven elements. Thus, the third triad of gods consisted of 49 god-intelligences.

According to Proclus, the world of the Soul is also triadic. There are divine souls (the “reigning,” “absolute,” and “intracosmic” gods), demonic souls (angels, devils, and heroes), and human souls.

As the quintessence of Neoplatonism, Proclus’ system, with its method of thinking, had a comprehensive influence on the development of medieval philosophy, from the Areopagite’s works to Michael Psellus, I. Petritsi, and Nicholas of Cusa.


Opera inedita. Edited by V. Cousin. Paris, 1864.


Rosán, L. J. The Philosophy of Proclus. New York, 1949. (Bibliography.)
Beierwaltes, W. Proklos: Grundzüge seiner Metaphysik. Frankfurt am Main, 1965.
Bastid, P. Proclus et le crépuscule de la pensée grecque. Paris, 1969.



?410--485 ad, Greek Neo-Platonist philosopher
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Die Abhangigkeit von Homer wurde noch einmal von Proklos herausgestellt, der den Text von Longin gekannt haben durfte.
Schon Proklos hat diese Doppeldeutigkeit des Platonischen Verhaltnisses zur Poesie hervorgehoben, und einige moderne Forscher sind ihm darin gefolgt (21).
Beierwaltes, Werner (1979) Proklos: Grundzuge seiner Metaphysik.
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Conference on Proklos; Methode, Seelenlehre, Metaphysik (2003: Jena, Germany) Ed.
Proklos, the son of Philosophos, asks the following of Rabbi Gamaliel in Acre while he is bathing in the Bath of Aphrodite: "It is written in your Law, `And there shall cleave naught of the devoted thing to thine hand.' Why then doth thou bathe in the Bath of Aphrodite?" To which he replies, "One may not answer in the bath." The editor glosses the story: "It is forbidden to speak words of the Law while naked"; The Mishnah, translated from the Hebrew, with introduction and brief explanatory notes, by Herbert Danby (Oxford: Clarendon Press, 1933), 440 n.
BEIERWALTES, Proklos: Grundzuge seiner Metaphysik (Vittorio Klostermann, Frakfurt a.
Ein Paradoxon in der Philosophie des Proklos, Duncker und Humblot, Berlin, 2008, 342 pp.