可持续性不是一种选择；它是我们星球未来的必需品。

The past is a darkness crowded with voices.

The true artist will let his wife starve, his children go barefoot, his mother drudge for his living at seventy, sooner than work at anything but his art.

译文：因此，即使拥有中原的富饶，也比不上这座都城的无限繁华。