Alfred Kinsey was an American scientist whose research on human sexuality laid the foundation for the modern field of sexology. His work had a profound influence on social and cultural values in the U.S. and many other countries. 
"Kinsey, an ardent atheist, considered most of what he read about sex prudish because it was based on traditional "Judaeo-Christian" ethics he considered repressive." 
"As a child, Kinsey was forbidden to learn anything about the subject that was to later bring him such fame. Kinsey ultimately disavowed the Methodist religion of his parents and became an atheist."