Charmadas, was an Academic

Platonism

Platonism is the philosophy of Plato or the name of other philosophical systems considered closely derived from it. In a narrower sense the term might indicate the doctrine of Platonic realism...

 philosopher and a disciple of Clitomachus at the Academy

Platonic Academy

The Academy was founded by Plato in ca. 387 BC in Athens. Aristotle studied there for twenty years before founding his own school, the Lyceum. The Academy persisted throughout the Hellenistic period as a skeptical school, until coming to an end after the death of Philo of Larissa in 83 BC...

 in Athens

Athens

Athens , is the capital and largest city of Greece. Athens dominates the Attica region and is one of the world's oldest cities, as its recorded history spans around 3,400 years. Classical Athens was a powerful city-state...

. He was a friend and companion (as he had been the fellow-pupil) of Philo of Larissa

Philo of Larissa

Philo of Larissa, was a Greek philosopher. He was a pupil of Clitomachus, whom he succeeded as head of the Academy. During the Mithradatic wars which would see the destruction of the Academy, he travelled to Rome where Cicero heard him lecture. None of his writings survive...

. He was teaching in Athens by 110 BC, and was clearly an important philosopher. He was still alive in 103 BC, but was dead by 91 BC. Cicero

Cicero

Marcus Tullius Cicero , was a Roman philosopher, statesman, lawyer, political theorist, and Roman constitutionalist. He came from a wealthy municipal family of the equestrian order, and is widely considered one of Rome's greatest orators and prose stylists.He introduced the Romans to the chief...

tells us that he was remarkable for his eloquence and for the great extent and retentiveness of his memory. His philosophical opinions were doubtless similar with those of Philo.