ValentinianismValentinianism was one of the major Gnostic Christian movements. Founded by Valentinus in the 2nd century AD, its influence spread widely, not just within Rome but also from Northwest Africa to Egypt through to Asia Minor and Syria in the East. Later in the movement's history it broke into an Eastern and a Western school. Disciples of Valentinus continued to be active into the 4th century AD, after the Roman Emperor Theodosius I issued the Edict of Thessalonica (380 AD), which declared Nicene Christianity as the State church of the Roman Empire.
Valentinus (Gnostic)Valentinus (Greek: Οὐαλεντῖνος), also spelled Valentinius; AD 100 – 180, was the best known and, for a time, most successful early Christian Gnostic theologian. He founded his school in Rome. According to Tertullian, Valentinus was a candidate for bishop but started his own group when another was chosen. Valentinus produced a variety of writings, of which for the most part only fragments quoted by his opponents survive. However, it has recently been argued that Valentinus's lost letter to Agathapous, quoted by Clement of Alexandria, is in fact Letter 366 of Pseudo-Basil.
NousNous, or Greek νοῦς (UKnaʊs, USnuːs), sometimes equated to intellect or intelligence, is a concept from classical philosophy for the faculty of the human mind necessary for understanding what is true or real. Alternative English terms used in philosophy include "understanding" and "mind"; or sometimes "thought" or "reason" (in the sense of that which reasons, not the activity of reasoning). It is also often described as something equivalent to perception except that it works within the mind ("the mind's eye").
BasilidesBasilides (Greek: Βασιλείδης) was an early Christian Gnostic religious teacher in Alexandria, Egypt who taught from 117 to 138 AD, and claimed to have inherited his teachings from the apostle Saint Matthias. He was a pupil of either the Simonian teacher Menander, or a supposed disciple of Peter named Glaucias. The Acts of the Disputation with Manes state that for a time he taught among the Persians. According to Agapius of Hierapolis he appeared in the 15th year of Trajan reign (113 AD).
HeracleonHeracleon was a Gnostic who flourished about AD 175, probably in the south of Italy. He is described by Clement of Alexandria (Strom. iv. 9) as the most esteemed (δοκιμώτατος) of the school of Valentinus; and, according to Origen (Comm. in S. Joann. t. ii. § 8, Opp. t. iv. p. 66), said to have been in personal contact (γνώριμος) with Valentinus himself. He is barely mentioned by Irenaeus (2.4.1) and by Tertullian (adv. Valent. 4). The common source of Philaster and Pseudo-Tertullian (i.e.
NeoplatonismNeoplatonism is a version of Platonic philosophy that emerged in the 3rd century AD against the background of Hellenistic philosophy and religion. The term does not encapsulate a set of ideas as much as a series of thinkers. Among the common ideas it maintains is monism, the doctrine that all of reality can be derived from a single principle, "the One". Neoplatonism began with Ammonius Saccas and his student Plotinus (c. 204/5–271 AD) and stretched to the 6th century AD.
SethianismThe Sethians were one of the main currents of Gnosticism during the 2nd and 3rd century CE, along with Valentinianism and Basilideanism. According to John D. Turner, it originated in the 2nd century CE as a fusion of two distinct Hellenistic Judaic philosophies and was influenced by Christianity and Middle Platonism. However, the exact origin of Sethianism is not properly understood. The Sethians (Latin Sethoitae) are first mentioned, alongside the Ophites, in the 2nd century, by Irenaeus (who was antagonistic towards gnosticism) and in Pseudo-Tertullian (Ch.
Ptolemy (Gnostic)Ptolemy the Gnostic, (Greek: Πτολεμαίος ο Γνωστικός Latin: Ptolemaeus Gnosticus) was a disciple of the Gnostic teacher Valentinius and is known for the Letter to Flora, an epistle he wrote to a wealthy woman named Flora, herself not a Gnostic. Ptolemy was probably still alive c. 180. No other certain details are known about his life; Harnack's suggestion that he was identical with the Ptolemy spoken of by Justin Martyr is as yet unproved. It is not known when Ptolemy became a disciple of Valentinius, but Valentinius was active in the Egyptian city of Alexandria and in Rome.
Nag Hammadi libraryThe Nag Hammadi library (also known as the "Chenoboskion Manuscripts" and the "Gnostic Gospels") is a collection of early Christian and Gnostic texts discovered near the Upper Egyptian town of Nag Hammadi in 1945. Thirteen leather-bound papyrus codices buried in a sealed jar were found by a local farmer named Muhammed al-Samman. The writings in these codices comprise 52 mostly Gnostic treatises, but they also include three works belonging to the Corpus Hermeticum and a partial translation/alteration of Plato's Republic.
Apocryphon of JohnThe Apocryphon of John, also called the Secret Book of John or the Secret Revelation of John, is a 2nd-century Sethian Gnostic Christian pseudepigraphical text attributed to John the Apostle. It is one of the texts addressed by Irenaeus in his Against Heresies, placing its composition before 180 AD. It is presented as describing Jesus appearing and giving secret knowledge (gnosis) to his disciple John. The author describes it as having occurred after Jesus had "gone back to the place from which he came".
