In Mental Prison a young boy is overwhelmed by intrusive thoughts.
Naked, in the middle of his room, he was contemplating her body.
In other words, he was feeling physical pleasure.
But soon he started to feel a different kind of pleasure.
The pleasure of being young, or maybe of no longer being very young.
In other words, he started to think too much, and as Emil Cioran said: “in relation to any act of life, the mind acts as a killjoy”.