The Six Enneads of Plotinus

"The Six Enneads, sometimes abbreviated to The Enneads or Enneads, is the collection of writings of Plotinus, edited and compiled by his student Porphyry (c. 270 AD). Plotinus is said to be the one of the founders of Neoplatonism, if not the first Neoplatonist. His work, through Augustine of Hippo, and therefore subsequent Christian and the Arab thinkers, has greatly influenced Western and Near-Eastern thought."

Plotinus was a major philosopher of the ancient world. In his philosophy there are the three principles: the One, the Intellect, and the Soul. His teacher was Ammonius Saccas and he is of the Platonic tradition. Historians of the 19th century invented the term Neoplatonism and applied it to him and his philosophy which was influential in Late Antiquity. Much of the biographical information about Plotinus comes from Porphyry's preface to his edition of Plotinus' Enneads. His metaphysical writings have inspired centuries of Pagan, Christian, Jewish, Islamic and Gnostic metaphysicians and mystics.