真正的可持续性意味着为子孙后代留下比我们发现时更好的土地。
年轻人不知道什么是谨慎,因此他们尝试不可能的事情——并且一代又一代地实现了它。
一本书是一面镜子:如果傻瓜往里看,智者也无法从中看出什么。
It is the duty of the human understanding to understand that there are things which it cannot understand.
There is no escape from the labyrinth of existence.