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.
Thomas Hobbes Thomas Hobbes ( ; 5 April 1588 – 4 December 1679), in some older texts Thomas Hobbes of Malmesbury, was an English philosopher who is considered one of the founders of modern political philosophy. Hobbes is best known for his 1651 book "Leviathan", which established the social contract theory that has served as the foundation for most later Western political philosophy. In addition to political philosophy, Hobbes also contributed to a diverse array of other fields, including history, jurisprudence, geometry, the physics of gases, theology, ethics, and general philosophy.