- Deliberate(as used in philosophy of action)
- To think carefully about different options and reasons before making a decision.
- Essential/Accidental distinction(a traditional philosophical tool being challenged by Plotinus's view)
- A philosophical separation between properties that are fundamental to what something is (essential) versus properties that are added on but not necessary (accidental)—like how 'being round' is essential to a circle, but 'being red' is accidental.
- First Principle(Used interchangeably with 'prime mover' and 'deity' in the context of medieval metaphysics)
- The subject matter of metaphysics; identified with God as Necessary Existent in Avicenna's framework and with the prime mover in Aristotelian natural philosophy.
- Necessary(ontological distinction in Mulla Sadra's metaphysics)
- The principle, God; pure existence without essence, quality or property that undergoes change or motion
- Overflow(how the One produces all existence)
- A spilling over or natural abundance; in this context, reality emerging automatically and abundantly from the One's infinite nature.
- Plotinus
- Plotinus was an ancient Greek philosopher who lived in Rome during the 3rd century AD and founded a spiritual philosophy called Neoplatonism. He taught that reality consists of different levels, with a perfect, infinite source at the top (called "the One") from which everything else flows downward, and that the goal of life is to reconnect with this divine source through contemplation and inner purification. His ideas deeply influenced later Christianity, Islam, and Judaism, making him one of the most important philosophers in Western and religious thought.
- The One(Neoplatonic and Academic metaphysics; Plato's Parmenides first hypothesis)
- A first principle characterized by absolute simplicity, incapable of having parts or receiving any positive predication, and ultimately not a being
- accidental(describing kinematic motion as non-essential)
- In philosophy, a property that something can gain or lose without changing what it fundamentally is (unlike essential properties that define the thing itself).
- emanation(Fârâbî's cosmology; derived from Arabic root f-y-ḍ)
- A technical term indicating that X's existence, rather than some further act of X, is the cause of Y's existence — the term names the causal relation but does not explain its mechanism