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 being all equal and independent, no one ought to harm another in his life, health, liberty, or possessions.

Science is a journey, and every step matters.

求知若饥，虚心若愚。

解释：两虎相斗而劣狗趁机得到好处。