最重要的是能够思考。
The most important thing is to be able to think.
我们必须将地球视为一个单一的有机体，并尊重它。
A writer is someone who has taught his mind to misbehave.
The question is not， Can they reason？ nor， Can they talk？ but， Can they suffer？
土壤不仅仅是泥土，它是文明的根基。