Philip of Opus

Philip of Opus was a Greek philosopher and astronomer of the fourth century BCE, a pupil and associate of Plato. By ancient tradition he edited Plato's last and unfinished work, the "Laws," preparing it for publication after his master's death, and he is widely thought to be the author of the appendix to it known as the "Epinomis." He also had interests in mathematics and astronomy, though little of his own work survives.