解释：对事物最好的证明是有效果，对论点最好的认定是有证据。
The state of nature has a law of nature to govern it, which obliges every one: and reason, which is that law, teaches all mankind, who will but consult it, that... no one ought to harm another in his life, health, liberty, or possessions.
数学的语言是普遍的，超越了文化和语言的障碍。
The best ideas come from not knowing the answer.
