"No nude, however abstract, should fail to arouse in the spectator some vestige of erotic feeling, even if it be only the faintest shadow - and if it does not do so it is bad art and false morals"

This quote by Kenneth Clark highlights the idea that nudity, even in abstract art, should elicit some level of erotic sensation in the viewer. Clark expresses that if a naked stops working to evoke any sense of sensuality, it is not just bad art, but likewise breaks the notion of real morals. Basically, Clark is promoting for an acknowledgment and gratitude of the sensuous elements of the human form in art. He thinks that to reject or neglect these elements would be disingenuous and ultimately damaging to the integrity of art and its relationship with human nature.