GnosticismGnosticism (from Ancient Greek: γνωστικός, romanized: gnōstikós, Koine Greek: [ɣnostiˈkos], 'having knowledge') is a collection of religious ideas and systems that coalesced in the late 1st century AD among Jewish and early Christian sects. These various groups emphasized personal spiritual knowledge (gnosis) above the proto-orthodox teachings, traditions, and authority of religious institutions. Gnostic cosmogony generally presents a distinction between a supreme, hidden God and a malevolent lesser divinity (sometimes associated with the God of the Hebrew Bible) who is responsible for creating the material universe.
Albigensian CrusadeThe Albigensian Crusade or the Cathar Crusade (Croisade des albigeois; 1209–1229) was a military and ideological campaign initiated by Pope Innocent III to eliminate Catharism in Languedoc, what is now southern France. The Crusade was prosecuted primarily by the French crown and promptly took on a political aspect. It resulted in the significant reduction of practicing Cathars and a realignment of the County of Toulouse with the French crown. The distinct regional culture of Languedoc was also diminished.
PhilosophyPhilosophy (love of wisdom in ancient Greek) is a systematic study of general and fundamental questions concerning topics like existence, reason, knowledge, values, mind, and language. It is a rational and critical inquiry that reflects on its own methods and assumptions. Historically, many of the individual sciences, like physics and psychology, formed part of philosophy. But they are considered separate academic disciplines in the modern sense of the term.
MarcionismMarcionism was an early Christian dualistic belief system that originated with the teachings of Marcion of Sinope in Rome around the year 144. Marcion was an early Christian theologian, evangelist, and an important figure in early Christianity. He was the son of a bishop of Sinope in Pontus. About the middle of the 2nd century (140–155) he traveled to Rome, where he joined the Syrian Gnostic Cerdo.
ManichaeismManichaeism (ˌmænᵻˈkiːɪzəm; in New Persian آیینِ مانی Āyīn-e Mānī; ) is a former major universal religion, founded in the 3rd century CE by the Parthian prophet Mani (216–274 CE), in the Sasanian Empire. Manichaeism teaches an elaborate dualistic cosmology describing the struggle between a good, spiritual world of light, and an evil, material world of darkness. Through an ongoing process that takes place in human history, light is gradually removed from the world of matter and returned to the world of light, whence it came.
Medieval InquisitionThe Medieval Inquisition was a series of Inquisitions (Catholic Church bodies charged with suppressing heresy) from around 1184, including the Episcopal Inquisition (1184–1230s) and later the Papal Inquisition (1230s). The Medieval Inquisition was established in response to movements considered apostate or heretical to Roman Catholicism, in particular Catharism and Waldensians in Southern France and Northern Italy. These were the first movements of many inquisitions that would follow.
Mani (prophet)Mani (in Middle Persian: 𐭌𐭀𐭍𐭉/𐭬𐭠𐭭𐭩/𐮋𐮀𐮌𐮈/𐬨𐬁𐬥𐬌/𐫖𐫀𐫗𐫏 Māni, New Persian: Māni, Chinese: Móní, Syriac Mānī, Greek Μάνης, Latin Manes; also Μανιχαῖος, Latin Manichaeus, from Syriac ܡܐܢܝ ܚܝܐ Mānī ḥayyā "Living Mani", April AD 216–2 March AD 274 or 26 February AD 277) was an Iranian prophet and the founder of Manichaeism, a religion most prevalent in late antiquity. Mani was born in or near Seleucia-Ctesiphon (south of modern Baghdad) in Mesopotamia, at the time part of the Parthian Empire.
Problem of evilThe problem of evil is the question of how to reconcile the existence of evil and suffering with an omnipotent, omnibenevolent, and omniscient God. There are currently differing definitions of these concepts. The best known presentation of the problem is attributed to the Greek philosopher Epicurus. It was popularized by David Hume. Besides the philosophy of religion, the problem of evil is also important to the fields of theology and ethics.
Iranian religionsIranian religions, also known as Persian religions, are, in the context of comparative religion, a grouping of religious movements that originated in the Iranian (Persian) plateau (or Greater Iran). The beliefs, activities, and cultural events of the ancient Iranians in ancient Iran are complex matters. The ancient Iranians made references to a combination of several Aryans and non-Aryan tribes. Aryans, or ancient Iranians, worshiped natural elements such as the sun, sunlight and thunder, but they eventually shifted their attention mostly to a single god, whilst acknowledging others.
TheismTheism is broadly defined as the belief in the existence of at least one deity. In common parlance, or when contrasted with deism, the term often describes the classical conception of God that is found in monotheism (also referred to as classical theism) — or gods found in polytheistic religions — a belief in God or in gods without the rejection of revelation as is characteristic of deism. Gnosticism is the belief in personal spiritual knowledge. Atheism is commonly understood as non-acceptance or rejection of theism in the broadest sense of theism, i.