I promise you that minds infected by desires — like bodies covered in spreading sores — actually enjoy stress and trouble. Some things please our bodies while also causing pain. Think about how you toss and turn in bed, switching positions before you're even tired of the current one. Or how you keep moving to find a cool spot. It's like Homer's Achilles, lying first on his stomach, then on his back, shifting into different positions. Like sick people do, he can't stand any position for long. He keeps changing as if the movement itself could cure him.
Similarly I assure you that these minds, over which desires have spread like evil ulcers, take pleasure in toils and troubles, for there are some things which please our body while at the same time they give it a certain amount of pain, such as turning oneself over and changing one's side before it is wearied, or cooling oneself in one position after another. It is like Homer's Achilles, lying first upon its face, then upon its back, placing itself in various attitudes, and, as sick people are wont, enduring none of them for long, and using changes as though they were remedies.