Posidonius

Posidonius (c. 135–51 BCE) was the most learned of the later Stoics — philosopher, historian, astronomer, geographer — whose vast curiosity earned him comparison with Aristotle.

He gave Stoicism a more Platonic turn, allowing the soul irrational powers and stressing the bonds of cosmic sympathy uniting all things. Through him, and through his pupil Cicero, much Stoic science passed to Rome.