Kant’s Lectures on Ethics>Uses of sexuality which are contrary to natural instinct and to animal nature are crimina carnis contra naturam. First amongst them we have onanism. This is abuse of the sexual faculty without any object... The practice is contrary to the ends of humanity and even opposed to animal nature. By it man sets aside his person and degrades himself below the level of animals.A second crimen carnis contra naturam is intercourse between sexus homogenii [same sex], in which the object of sexual impulse is a human being but there is homogeneity instead of heterogeneity of sex... This practice too is contrary to the ends of humanity... but the person is set aside, the self is degraded below the level of the animals, and humanity is dishonoured.The third crimen carnis contra naturam occurs when the object of the desire is in fact of the opposite sex but is not human. Such is sodomy [here meaning bestiality], or intercourse with animals. This, too, is contrary to the ends of humanity and against our natural instinct. It degrades mankind below the level of animals, for no animal turns in this way from its own species.">All crimina carnis contra naturam degrade human nature to a level below that of animal nature and make man unworthy of his humanity... Suicide is the most dreadful, but it is not as dishonourable and base as the crimina carnis contra naturam. It is the most abominable conduct of which man can be guilty. So abominable are these crimina carnis contra naturam that they are unmentionable
>>18474109No wonder Peter Singer was a utilitarian
