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.
我相信家庭的重要性和努力工作的价值。
There is one small step for man, a giant leap for mankind.
电子学的未来掌握在那些能够利用半导体力量的人手中。
The arithmetic of algebraic groups is a central theme in the Langlands program.