Plotinus is widely regarded as the founder of Neo-Platonism. He was a Greek philosopher who lived in Rome during the 3rd century AD and established a school of philosophy that attracted students from all over the Roman Empire.

The One is the central concept of Neo-Platonism. It is the ultimate reality, the source of all existence, and the goal of all spiritual striving. The One is ineffable and transcendent, beyond the reach of human understanding.

Neo-Platonism teaches that the world of multiplicity is an emanation of the One. This means that the One is the source of all things, and that the world of multiplicity is a manifestation of the One's creative power.

The Demiurge is a concept in Neo-Platonism that refers to the intermediary between the One and the world of multiplicity. The Demiurge is responsible for creating the world and ordering it according to the principles of the One.

The World Soul is a concept in Neo-Platonism that refers to the principle of life in the world. The World Soul is responsible for animating the world and giving it vitality.

The goal of human existence in Neo-Platonism is to return to the One. This is achieved through a process of purification and contemplation, which allows the soul to transcend the limitations of the material world and experience union with the divine.

Plotinus wrote the Enneads, a collection of six books that contain his philosophical teachings. The Enneads are considered one of the most important works in the history of philosophy.

Porphyry wrote the Life of Plotinus, a biography of his teacher. The Life of Plotinus is an important source of information about Plotinus's life and philosophy.

Proclus wrote the Commentary on the Parmenides, a commentary on Plato's Parmenides dialogue. The Commentary on the Parmenides is considered one of the most important works in the history of Neo-Platonism.

Proclus wrote the Theology of Aristotle, a commentary on Aristotle's Metaphysics. The Theology of Aristotle is considered one of the most important works in the history of Neo-Platonism.

Proclus wrote the Elements of Theology, a systematic exposition of Neo-Platonic philosophy. The Elements of Theology is considered one of the most important works in the history of Neo-Platonism.

Proclus wrote the Liber de Causis, a treatise on the causes of things. The Liber de Causis is considered one of the most important works in the history of Neo-Platonism.

Plotinus wrote the Enneads, a collection of six books that contain his philosophical teachings. The Enneads are considered one of the most important works in the history of philosophy.

Porphyry wrote the Life of Plotinus, a biography of his teacher. The Life of Plotinus is an important source of information about Plotinus's life and philosophy.

Proclus wrote the Commentary on the Parmenides, a commentary on Plato's Parmenides dialogue. The Commentary on the Parmenides is considered one of the most important works in the history of Neo-Platonism.