Hyrtacus (452 BC-) was a Phocian Greek student of Socrates who lived in Delphi during the 5th century BC. Hyrtacus took to writing down Socrates' teachings on a papyrus scroll to preserve his lessons, and, in 426 BC, the Cult of Kosmos instigated Socrates' arrest to prevent him from challenging their hegemony over Greece. They also sent soldiers to seize Socrates' writings from Hyrtacus for evidence in Socrates' trial, and Hyrtacus fled to the Tomb of the First Pythia to go into hiding. He was rescued by the mercenary Kassandra, who persuaded him that she was a friend of Socrates by recalling how "frustrating" the talkative Socrates was. Hyrtacus then informed her that the priests at the Sanctuary of Athena Pronaia were involved in the conspiracy against Socrates, and that they were after Socrates' writings. After Kassandra resolved to deal with the priests, Hyrtacus entrusted her with Socrates' writings, saying that he was not prepared for the trouble which Socrates had gotten himself into, and that he might one day resume being his student.