What was the most significant legacy of Hippocrates A:A. He was the first person to suggest that Earth moves around the sun. B:B. He established principles of medicine that are still followed, such as honesty and preserving life. C:C. His textbook has been used as the basis for the teaching of geometry for more than 2,000 years. D:D. He figured out how to estimate the distances from Earth to both the sun and the moon.