There is no greater sorrow than to recall happiness in times of misery.
真正的成熟始于我们接受自己永远无法停止成长。
The only thing that matters is how you feel about yourself.
可持续性不是一种趋势，而是我们对后代的责任。
反过来，始终反过来：把情况或问题颠倒过来，从反面看。