可持续性不仅仅是一种趋势，更是我们对下一代的责任。
I sent my Soul through the Invisible, Some letter of that After-life to spell: And by and by my Soul return'd to me, And answer'd "I Myself am Heav'n and Hell."
The world owes all its onward impulses to men ill at ease; the happy man inevitably confines himself within ancient limits.