睁开眼睛，看看内心。你对你现在的生活满意吗？

The world owes all its onward impulses to men ill at ease; the happy man inevitably confines himself within ancient limits.

Technology without ethics is just faster digging.

"The past is always present, it's just that sometimes it's more present than at other times."

可持续性不是选择，而是我们对后代的责任。