You can’t let success get to your head and failure to your heart.
We thought we had such problems. How were we to know we were happy?
释义:知足常乐的人会感到快乐,没有欲望没有追求的人会感到轻松。
It is to the credit of human nature, that, except where its selfishness is brought into play, it loves more readily than it hates.