He who fights with monsters should be careful lest he thereby become a monster.
与怪物搏斗的人应小心,免得自己也变成怪物。
You will never be happy if you continue to search for what happiness consists of. You will never live if you are looking for the meaning of life.
石油和天然气行业必须进化,否则就会被淘汰。
有其父,必有其子。