The former Smiths frontman made the comment during a discussion with acclaimed Manchester-born artist Linder transcribed for Interview magazine.
Morrissey said to Linder: "Sexually, the human mind is very limited. Anything sexual in modern art is usually seen as inventive filth. Within pop music, sexuality is always, always, always artificially aroused.
"Why do you think sexuality is such a heavy burden for humans? Horses, for example, never need to refer to The Joy of Sex or the Kama Sutra. Isn't it a fact that, sexually, human beings are just a mesmerising mess?"
Linder responded: "I come from a colder age, when any man with lead in his pencil would have to fight his way through five layers of corporation underwear to even glimpse the stubborn flesh that he would, of course, be tartly denied.
"The dichotomous sexual world of the 1960s - before tans, gyms, and irony - shaped those who, like myself, grew to adolescence through its murk. The ultimate mystery would end up being as mundane as a Kenwood Chefette, but less useful.
"But as you once sang, so truthfully [on 1985 track 'Stretch Out And Wait'], 'Amid concrete and clay and general decay, nature must still find a way...'."