"Under normal conditions, everybody is more or less good, or at least ordinary. But tempt them, and they may suddenly change. That is what is so frightening about men. One must always be on one's guard."

"No matter how full one's head might be with the image of greatness, one was useless, I found out, unless one was a worthy man first."

Source: 'Kokoro' by Natsume Soseki