The Homosexual Matrix the most novel account of the way in which behavioral expression communicates internal states since Charles Darwin's "The Expression of the Emotions in Man and Animals" (1872), but considered his most original contribution to be his explanation of how erotic feeling depends on "resistance", which might consist of any of several impediments to easy access to sexual satisfaction. Begelman called Tripp a skillful writer who was learned on the subject of homosexuality, but whose objectivity was nevertheless open to question. Karlen wrote that Tripp made numerous unjustified claims, such as that homosexual men tend to have a larger than average
The Man in the Moone as one of the first works of science fiction, there is no general agreement that it is even "proto-science-fiction". Early commentators recognised that the book is a kind of picaresque novel, and comparisons with "Don Quixote" were being made as early as 1638. In structure as well as content "The Man in the Moone" somewhat resembles the anonymous Spanish novella "Lazarillo de Tormes" (1554); both books begin with a genealogy and start out in Salamanca, featuring a man who travels from master to master seeking his fortune. But most critics agree that the picaresque mode is not sustained throughout, and