1. Human consumption does not come from the exhaustion of intelligence or physical strength, nor from conflicts with nature or peers, but often from the war within oneself. 2. When one understands a matter, it is heaven; when one does not, it is hell. Whether certain things bring trouble depends on how we perceive and handle them. Not caring is also a kind of openness and nonchalance. 3. The more places one has been, the clearer one is about which places one wants to return to. The more people one has met, the clearer one is about which people one needs to interact with the most. 4. Life is not merely about experiences; only the life that one comprehends can be called an experience. 5. Never overestimate one's importance in the hearts of others; this is also an effective form of self-protection.