“The Indian observed that there were no straight lines in Nature. The Sun and the Moon were round, and so was the Earth. The rising and the setting of the Sun was a circular motion. Birds built their nests in circles. The growth pattern of trees and rocks was circular. Many Indians lived in circular homes called tipis , and native communities were set up around a circle because the whole of Nature expressed itself in circular patterns. Only the white man, it seemed, thought of everything in straight lines.”