In Reconsidering the Emergence of the Gay Novel in English and German, James P. Wilper examines a key moment in the development of the modern gay novel by analyzing four novels by German, British, and American writers. Wilper studies how the texts are influenced by and respond and react to four schools of thought regarding male homosexuality in the late nineteenth and early twentieth centuries. The first is legal codes criminalizing sex acts between men and the religious doctrine that informs them. The second is the ancient Greek erotic philosophy, in which a revival of interest took place in the late nineteenth century. The third is sexual science (or ?sexology?), which offered various medical and psychological explanations for same-sex desire and was employed variously to defend, as well as to attempt to cure, this "perversion."