The biggest room in the world is the room for improvement.
Positive emotions are not trivial luxuries, but instead may be critical necessities for optimal functioning.
不要诋毁众人的成就而归功于自己,不要埋没天下的事理以掩饰自己的过失。
Theoretically there is a perfect possibility of happiness: believing in the indestructible element within oneself, and not striving towards it.