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.
预测未来最可靠的方法就是去创造未来。
世界始于人类之前，也必将终于人类之后。
We should weep for men at their birth， not at their death.
Don't live for others, live for yourself.