自然规律是亘古不变的,不会因尧的仁德而存在,不会因桀的暴虐而消亡。
Experience is a good school, but the fees are high.
The saddest thing about love is that not only that it cannot last forever, but that heartbreak is soon forgotten.
可持续性不是一种选择,而是一种责任。
If you can't mine it safely, you shouldn't mine it at all.