Born in Cos, site of an important temple of Asclepius, god of medicine, Hippocrates may have studied medicine with his father. He traveled around Greece training medical students that there are scientific reasons for ailments. Before him, medical conditions were attributed to divine intervention. Hippocrates maintained that all diseases have natural causes. He made diagnoses and prescribed simple treatments like diet, hygiene, and sleep. Hippocrates is the author of the saying "Life is short, and the Art long" (from his Aphorisms). The name Hippocrates is familiar because of the oath that doctors take (Hippocratic Oath) and a body of early medical treatises that are attributed to Hippocrates (Hippocratic corpus), which includes the Aphorisms.