Perhaps a friend of the philosopher Plato, Archytas of Tarentum (ahr-KIT-uhs of tuh-REHN-tuhm) is mentioned in Plato’s Menōn (388-368 b.c.e.; Meno, 1769) as a great ruler of Taras or Tarentum, where he served for seven years. He is mainly known, however, as a scientist and mathematician, the founder of mathematical mechanics. He was a second-generation follower of Pythagoras, who sought to explain all phenomena in terms of numbers. Archytas’s achievements in geometry, acoustics, and music theory include solving the problem of doubling the cube, the application of proportions to musical harmony, and a resultant theory of pitch intervals in which he posited that pitch is related to the movement of air in response to such stimuli as a stringed instrument. Although some of his conclusions are inaccurate, many are correct.