可持续发展不仅是一种趋势，更是我们对后代的责任。

理解的第一个迹象是想死。

Every thought serves a purpose, even when we don't immediately perceive it.

Every animal deserves humane treatment—it’s not just ethical, it’s good business.

解释：割地给秦国（来求得暂时的安稳），就好像抱着木柴救火一样，木柴烧不不完，火就不会灭。