Which one for the first thinkers to form Free will in antiquity was also well-known for formulation of an atomic theory of the universe?
Democritus Democritus ( ; Greek: Δημόκριτος , "Dēmókritos", meaning "chosen of the people"; c. 460 – c. 370 BC ) was an influential Ancient Greek pre-Socratic philosopher primarily remembered today for his formulation of an atomic theory of the universe.
Active intellect The active intellect (Latin: "intellectus agens"; also translated as agent intellect, active intelligence, active reason, or productive intellect) is a concept in classical and medieval philosophy. The term refers to the formal ("morphe") aspect of the intellect ("nous"), in accordance with the theory of hylomorphism.