How can man know himself? It is a dark, mysterious business: if a hare has seven skins, a man may skin himself seventy times seven times without being able to say, “Now that is truly you; that is no longer your outside.” It is also an agonizing, hazardous undertaking thus to dig into oneself, to climb down toughly and directly into the tunnels of one’s being. How easy it is thereby to give oneself such injuries as no doctor can heal.