Posidonius (; , "of Poseidon") "of Apameia" (ὁ Ἀπαμεύς) or "of Rhodes" (ὁ Ῥόδιος) (), was a Greek politician, astronomer, astrologer,Augustine of Hippo, The City of God Book V, Chapter 2, "Posidonius the Stoic, who was much given to astrology" geographer, historian, mathematician, and teacher native to Apamea, Syria. He was considered the most learned man of his time and, possibly, of the entire Stoic school. After a period learning Stoic philosophy from Panaetius in Athens, he spent many years in travel and scientific researches in Spain, Africa, Italy, Gaul, Liguria, Sicily and on the eastern shores of the Adriatic. He settled as a teacher at Rhodes where his fame attracted numerous scholars. Next to Panaetius he did most, by writings and personal lectures, to spread Stoicism to the Roman world, and he became well known to many leading men, including Pompey and Cicero.
Posidonius (;  "of Poseidon") "of Apameia" (ὁ Ἀπαμεύς) or "of Rhodes" (ὁ Ῥόδιος) () was a Greek politician astronomer astrologerAugustine of Hippo The City of God Book V Chapter 2 "Posidonius the Stoic who was much given to astrology" geographer historian mathematician and teacher native to Apamea Syria He was considered the most learned man of his time and possibly of the entire Stoic school After a period learning Stoic philosophy from Panaetius in Athens he spent many years in travel and scientific researches in Spain Africa Italy Gaul Liguria Sicily and on the eastern shores of the Adriatic He settled as a teacher at Rhodes where his fame attracted numerous scholars Next to Panaetius he did most by writings and personal lectures to spread Stoicism to the Roman world and he became well known to many leading men including Pompey and Cicero