God only rarely reveals the future. When he does so, it is for one reason: it's a future that was written so as to be altered.

Sustainability is not just a goal, it's a responsibility.

解释：不通过学习而能自己知道的，不去请教他人而能自己通晓的，从古到今没有这样的事。

Writing is a socially acceptable form of schizophrenia.

知识的唯一来源是经验。