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

The desire to grap and be united with another human body i so fundamental a part of our nature that our judgement of what is known as "pure form" is inevitably influenced by it; and one of the difficulties of the nude as a subject for art is that these instincts cannot lie hidden, as they do, for example, in our enjoymnet of a piece of pottery, thereby gaining the force of sublimation, but are dragged into the foreground, where they risk up setting the unity of responses from which a work of art derives its independent life. Even so, the amount of erotic content a work can hold in solution is very high.

KENNETH CLARK. The nude: A Study in Ideal Form. 1956

Art and sexuality are the same thing because art can only be erotic. Art is never chaste; all the ignorant fools should be prohibited and it shouldn't be kept within the reach of those who aren't prepared. Yes, art is dangerous, and if it is chaste it is not art.