Never love too deeply, or the days of being abandoned will cost you half your life. Don't overestimate the goodness of human nature, nor underestimate its evil. When there are no conflicts of interest, people seem very kind. Time will tell you that everything in the world will eventually expire. Don't overestimate your relationship with anyone. Over time, even iron will rust; let alone the fickle human heart. Never expect too much from human nature. Don't think of yourself as a special exception; be prepared to lose. No one is an exception.