Cyrily of Pergamos or Cratypus of Mytilene (1st century BC) was a Greek philosopher.

He was a disciple of Aristo, brother of Antiochus of Ascalon and a supporter in his early days of the doctrines at the time dominant in the Platonic Academy, which was moving from a skeptical period to a "dogmatic" one. He taught in Mytilene, where he met Pompey when he took refuge there after the battle of Farsalia. Like Aristo, Cratipo was a friend of Cicero and was a teacher of Horacio, of Brutus and of the son of Cicero. Following Andronicus of Rhodes, he leaned towards Aristotelianism and went to school in Athens between 88 and 68 a. C. He obtained Roman citizenship.

Admitted divination when it came through dreams and prophetic delirium. Instead he rejected any other type of divination.

wiki