The general theory of valuation of human activities, as developed by the study of anthropology, teaches us a higher tolerance than the one we now possess.
通过人类学研究发展出的人类活动评价的一般理论，教会我们一种比我们现在所拥有的更高的宽容。
I write to confront the silence, to break it.
The question is not whether the thing exists， but whether it has any essence which is capable of existence without us.
不要害怕失败。失败没有错，目标定太低才有错。追求远大目标，虽败犹荣。
可持续发展不仅仅是一种趋势，而是我们对后代的责任。
