Hippocrates is known as the father of medicine. He separated religion from medicine and tried to find scientific reasons for why people became ill. By observing a patient_s symptoms he was often able to diagnose illnesses and find cures. He encouraged his patients to take care of their bodies and urged fellow doctors to practice good hygiene and have a positive bedside manner. He founded a medical school in Greece to share his knowledge of medicine and philosophy. His code of ethics became known as the Hippocratic Oath. For more information, read The Human Body, another book in the Mission Science series.