Man, says Protagoras, now has the wisdom necessary for life ... but he does not have political wisdom. At this point, people are living spread out and hence are at the mercy of stronger animals, who begin killing them off.... They seek to save themselves from the beasts by banding together and forming cities. But they do injustice to one another, at such close quarters, because they lack the political art. So, dispersed once more, they begin perishing again.

Man, says Protagoras, now has the wisdom necessary for life ... but he does not have political wisdom. At this point, people are living spread out and hence are at the mercy of stronger animals, who begin killing them off.... They seek to save themselves from the beasts by banding together and forming cities. But they do injustice to one another, at such close quarters, because they lack the political art. So, dispersed once more, they begin perishing again.

In Lucretius, sexual desire is considered real and genuine, whereas love is illusory. Venus, the goddess who represents the power of sexual desire, is the font of love. She merely mocks lovers with mental images. Try as they might, lovers cannot satisfy themselves by gazing nor by rubbing against one another because the madness of love will always return; hence Lucretius' prescription to flee the mental images, that is, to ward off what feeds love, turning the mind elsewhere.

Halfway measures, such as loincloths or fig leaves, remain more titillating than complete nudity.