Problem: Henry Havelock Ellis, known as Havelock Ellis (2 February 1859 - 8 July 1939), was an English physician, writer, progressive intellectual and social reformer who studied human sexuality. He co-authored the first medical textbook in English on homosexuality in 1897, and also published works on a variety of sexual practices and inclinations, as well as on transgender psychology. He is credited with introducing the notions of narcissism and autoeroticism, later adopted by psychoanalysis. Ellis was among the pioneering investigators of psychedelic drugs and the author of one of the first written reports to the public about an experience with mescaline, which he conducted on himself in 1896.

Ellis was strongly opposed to the idea of castration for eugenic purposes. In 1909, regulations were introduced at the Cantonal Asylum in Bern, which allowed those deemed 'unfit' and with strong sexual inclinations to be mandatorily sterilized. In a particular instance, several men and women, including epileptics and pedophiles were castrated, some of whom voluntarily requested it. While the results were positive, in that none of the subjects were found guilty of any more sexual offences, Ellis remained staunchly opposed to the practice. His view on the origin of these inclinations was that sexual impulses do not reside in the sexual organs, but rather they persist in the brain. Moreover, he posited that the sexual glands provided an important source of internal secretions vital for the functioning of the organism, and thus their removal could greatly injure the patient. However, already in his time, Ellis was witness to the rise of vasectomies and ligatures of the Fallopian tubes, which performed the same sterilization without removing the whole organ. In these cases, Ellis was much more favorable, yet still maintaining that "sterilization of the unfit, if it is to be a practical and humane measure commanding general approval, must be voluntary on the part of the person undergoing it, and never compulsory." His opposition to such a system was not only rooted in morality. Rather, Ellis also considered the practicality of the situation, hypothesizing that if an already mentally unfit man is forced to undergo sterilization, he would only become more ill-balanced, and would end up committing more anti-social acts. Though Ellis was never at ease with the idea of forced sterilizations, he was willing to find ways to circumvent that restriction. His focus was on the social ends of eugenics, and as a means to it, Ellis was in no way against 'persuading' 'volunteers' to undergo sterilization by withdrawing Poor Relief from them. While he preferred to convince those he deemed unfit using education, Ellis supported coercion as a tool. Furthermore, he supported adding ideas about eugenics and birth control to the education system in order to restructure society, and to promote social hygiene. For Ellis, sterilization seemed to be the only eugenic instrument that could be used on the mentally unfit. In fact, in his publication The Sterilization of the Unfit, Ellis argued that even institutionalization could not guarantee the complete prevention of procreation between the unfit, and thus, "the burdens of society, to say nothing of the race, are being multiplied. It is not possible to view sterilization with enthusiasm when applied to any class of people...but what, I ask myself, is the practical alternative?"

did he write a book about it?

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Problem: John William Money (8 July 1921 - 7 July 2006) was a psychologist, sexologist and author, specializing in research into sexual identity and biology of gender. He was one of the first scientists to study the psychology of sexual fluidity and how the societal constructs of "gender" affect an individual. More recent academic studies have criticized Money's work in many respects, particularly in regards to his involvement with the sex-reassignment of David Reimer and his eventual suicide. Money's writing has been translated into many languages, and includes around 2,000 articles, books, chapters and reviews.

Born in Morrinsville, New Zealand, to a family of English and Welsh descent, Money initially studied psychology at Victoria University of Wellington, graduating with a double master's degree in psychology and education in 1944. Money was a junior member of the psychology faculty at the University of Otago in Dunedin, but in 1947, at the age of 26, he emigrated to the United States to study at the Psychiatric Institute of the University of Pittsburgh. He left Pittsburgh and earned his PhD from Harvard University in 1952. He was married briefly in the 1950s but had no children. Money proposed and developed several theories and related terminology, including gender identity, gender role, gender-identity/role, and lovemap. He coined the term paraphilia (appearing in the DSM-III) to replace perversions and introduced the term sexual orientation in place of sexual preference, arguing that attraction is not necessarily a matter of free choice. Money was a professor of pediatrics and medical psychology at Johns Hopkins University from 1951 until his death. He also established the Johns Hopkins Gender Identity Clinic in 1965 along with Claude Migeon who was the head of plastic surgery at Johns Hopkins. The hospital began performing sexual reassignment surgery in 1966. At Johns Hopkins, Money was also involved with the Sexual Behaviors Unit, which ran studies on sex-reassignment surgery. He received the Magnus Hirschfeld Medal in 2002 from the German Society for Social-Scientific Sexuality Research. Money was an early supporter of New Zealand's arts, both literary and visual. He was a noted friend and supporter of author Janet Frame. In 2002, as his Parkinson's disease worsened, Money donated a substantial portion of his art collection to the Eastern Southland Art Gallery in Gore, New Zealand. In 2003, the New Zealand Prime Minister, Helen Clark, opened the John Money wing at the Eastern Southland Gallery. Money died 7 July 2006, one day before his 85th birthday, in Towson, Maryland, of complications from Parkinson's disease.

what else did he do?

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Money was an early supporter of New Zealand's arts, both literary and visual. He was a noted friend and supporter of author Janet Frame.