The Thief's Journal, Jean Genet.

"At least," I said to myself, "if my shame is real, it hides a sharper, more dangerous element, a kind of sting that will always threaten anyone who provokes it. It might not have been laid over me like a trap, might not have been intentional, but since it is what it is, I want it to conceal me so that I can lie in wait beneath it."