A law of nature， lex naturalis， is a precept or general rule found out by reason， by which a man is forbidden to do that which is destructive of his life or takes away the means of preserving the same.
解释：向外物游览就要要求外物的完备，向自己内心求取，则能充实完善自身。
一本书就是你手中握着的梦想。
The old believe everything; the middle-aged suspect everything; the young know everything.
Life is a balance between holding on and letting go.
The most important quality for a researcher is persistence.
尽管儿童的举止有比较大的自由，但总的说来，他们给人一种非常有纪律的印象。
I'm not a businessman, I'm a business, man!