[36] But the self-instructed race, of which Isaac was a partaker, the excellent country of the mastery over the passions, has received as its share a nature simple, and unmixed, and unalloyed, standing in no need of either practise or instruction in which there is need of the concubine sciences, and not only of the citizen wives; for when God has showered down from above that most requisite benefit of knowledge, self-taught, and having no need of a preceptor, it would be impossible any longer for a man to live with the slavish and concubine arts, having a desire for bastard doctrines as his children. For the man who has arrived at this honour, is inscribed as the husband of the mistress and princess virtue; and she is called in the Greek language, perseverance, but among the Hebrews her name is Rebekkah.