Neoplatonism

Neoplatonism, is a form of Platonism it started in the 2nd century officially ended around the 6th century but it’s had numerous impacts on later philosophy.

It started with Plotinus teacher, Ammonius Saccas but Plotinus is really the first Neoplatonist. His most important idea is that of the one, to understand what the one is let me give you a crash course in Neoplatonism. It started with the one, then it Emanationed the nous or in English the Divine Intellect. The nous contemplates the one and this emanates the soul.

Ideas
Neoplatonism is a form of Mysticism. Soul in Neoplatonism has Highest Origin coming ultimately directly from ONE. In Neoplatonism Universe may be divided in two "worlds" or rather just realities as everything is part of ONE and thus Universe. First, being phenomenal world, being an unending emanations of ONE, meanwhile second, invisible world, posseses a very essence of ONE, an eternal, perfect, essence of everything, ultimate reality. ONE in Neoplatonism is the first principle, The God. Which is source of all Universe and thus, of everything in existance. Basically speaking, everything is emanations of God ultimately in one way or another while also possesing their own unique nature and soul. Neoplatonism doesn't believes evil is a separate force, but rather, lack of goodness, thus, evil is rather an false ego, corruption to ONE's rather than separate force. Neoplatonists also are very distinct from most religious/philosophical groups, believing unity with God, human happiness as in inner-peace and human perfection can be achieved in this world, here and now, by means of deeper philosophy, mysticism and intuition. Ultimately, the totality of Universe and everything, including people, nature etc. will be restored and return to ONE as it once was.