Classical theism

Aristotle (; 384–322 BC) was an ancient Greek philosopher and polymath. His writings cover a broad range of subjects spanning the natural sciences, philosophy, linguistics, economics, politics, psychology, and the arts. As the founder of the Peripatetic school of philosophy in the Lyceum in Athens, he began the wider Aristotelian tradition that followed, which set the groundwork for the development of modern science.

Socrates (; ; – 399 BC) was an ancient Greek philosopher from Classical Athens, perhaps the first Western moral philosopher, and a major inspiration on his student Plato, who largely founded the tradition of Western philosophy. An enigmatic figure, Socrates authored no texts and is known mainly through the posthumous accounts of classical writers, particularly his students Plato and Xenophon. These accounts are written as dialogues, in which Socrates and his interlocutors examine a subject in the style of question and answer; they gave rise to the Socratic dialogue literary genre. Contrad

Italian Dominican friar, philosopher, Catholic priest, and Doctor of the Church (1225–1274)

Plotinus (; , Plōtînos;  – 270 CE) was a Hellenistic Greek philosopher, born and raised in Roman Egypt. Plotinus is regarded by modern scholarship as the founder of Neoplatonism.

Neoplatonism, also called late platonism, 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 distinct ideas based on a form of Platonism as much as a series of Platonic thinkers coming primarily from a certain ancient historical period. Among the common ideas it maintains is monism, the doctrine that all of reality can be derived from a single principle, "the One".

thumb|Head of Plato, Roman copy. The original was exhibited at the Academy after the death of the philosopher (348/347 BC).

Hermeticism, or Hermetism, is a philosophical and religious tradition rooted in the teachings attributed to Hermes Trismegistus, a syncretic figure combining elements of the Greek god Hermes and the Egyptian god Thoth. This system encompasses a wide range of esoteric knowledge, including aspects of alchemy, astrology and theurgy, significantly influencing various mystical and occult traditions throughout history. The writings attributed to Hermes Trismegistus, often referred to as the Hermetica, were produced over a period spanning many centuries () and may be very different in content and sco

theological treatise by Thomas Aquinas

Emanationism is a theory in the cosmology or cosmogony of certain religious and philosophical systems, that posits the concept of emanation. According to this theory, emanation, from the Latin emanare meaning "to flow from" or "to pour forth or out of", is the mode by which all existing things are derived from a 'first reality', or first principle. In the emanationist concept all things are derived from this first reality or perfect God, by consecutive steps of degradation, to a lower degree of this first reality or God: at every consecutive step the emanating beings are less pure, less perfec

American author, theologian, and philosopher

belief that God is without distinguishable parts, characteristics or features (is "one")

Philosophy that defines God as the Absolute Being and Absolute Self