Soranus of Ephesus, a 2nd-century Greek gynecologist, was Hippocrates' first biographer and is the source of most personal information about him. Later biographies are in the Suda of the 10th century AD, and in the works of John Tzetzes, which date from the 12th century AD. Hippocrates is mentioned in passing in the writings of two contemporaries: Plato, in "Protagoras" and "Phaedrus", and, Aristotle's "Politics", which date from the 4th century BC.
After Hippocrates, the next significant physician was Galen, a Greek who lived from AD 129 to AD 200. Galen perpetuated Hippocratic Medicine, moving both forward and backward. In the Middle Ages, the Islamic world adopted Hippocratic methods and developed new medical technologies. After the European Renaissance, Hippocratic methods were revived in western Europe and even further expanded in the 19th century. Notable among those who employed Hippocrates' rigorous clinical techniques were Thomas Sydenham, william Heberden, Jean-Martin Charcot and william Osler. Henri Huchard, a French physician, said that these revivals make up "the whole history of internal Medicine."