The beauty of mathematics lies in its simplicity and depth.
出自先秦《荀子·哀公》。鸟被逼得走投无路之时就会用嘴啄人,兽到困窘之时就会用爪抓人,人到穷困潦倒之时就会设计骗人。以鸟兽困窘之时的行为为喻,说明人到穷困潦倒之时便会放弃道德操守的原因。
解析:好善恶恶是人之本能。
Happiness is not something ready made. It comes from your own actions.
The Internet is a platform for innovation and creativity.