The pioneering studies in human sexuality of Havelock Ellis (1859-1939) challenged the taboos and hypocrisies of Victorian society and paved the way for greater openness that has characterized the modern era.

Born on February 2, 1859 in Croydon, England, Havelock Ellis was the son of a prosperous sea captain. Father and son went on a round-the-world voyage when Ellis was only seven years old. Ellis was a child prodigy. Reading soon became his passion. After having gone through the volumes of Nature Displayed, which he found at home, he proceeded to make his way through the works of several literary giants. At the age of twelve, he prepared a manuscript titled "The Precious Stones of the Bible," which he intended to publish, but decided the cost of publication was prohibitive. He then planned a second book, about flowers, and wrote various essays.

Ellis was sent to the Poplars, an English...