It has been said of a number of famous people that they never experienced sexual intercourse. It is hard to establish such claims as the truth. It was said that Immanual Kant, the German philosopher, died a virgin at the age of eighty. And the allegation was made that Sir Isaac Newton never experienced sexual intercourse. “Although mathematical genius can hardly be attributed to this singular neglect on Sir Isaac’s part, it might certainly explain why he suffered so severely from insomnia.” (B. J. Hurwood, “The Golden Age of Erotica.”)