  The other relationship in which objectification is, for Kant, clearly present is concubinage. According to Kant, concubinage is the non-commodified sexual relationship between a man and more than one woman (the concubines). Kant takes concubinage to be a purely sexual relationship in which all parties aim at the satisfaction of their sexual desires (Kant Lectures on Ethics, 166). The inequality that is involved in this relationship makes it problematic. Kant explains that “the woman surrenders her sex completely to the man, but the man does not completely surrender his sex to the woman” (Kant Lectures on Ethics, 169). Since body and self are for Kant inseparable and together they constitute the person, in surrendering her body (her sex) exclusively to her male partner, the woman surrenders her whole person to the man, allowing him to possess it. The man, by contrast, who has more than one sexual partner, does not exclusively surrender himself to the woman, and so he does not allow her to possess his person. In allowing her male partner to possess her person, without herself being able to similarly possess his person, Kant believes that eventually the concubine (and this also applies to the woman in any other polygamous relationship, including polygamous marriage) loses her person and is made ‘into a thing’ (Kant Lectures on Ethics, 166).