Richard von Krafft-Ebing

Context:

Described as 'a vast compendium of sexual deviancy' published in 1886, which introduced terms like sadism and discussed lust murder, later including Jack the Ripper as 'case 17'

Context:

Explicitly described as 'this great book' by German psychologist Richard von Krafft-Ebing about homosexuality, which was translated into English in 1892, three years before Wilde's trial. Discussed in context of the medicalization of sexuality in the late 19th century.