要成为一个好的数学家,你需要既有直觉又有严谨。
To be a good mathematician, you need to have both intuition and rigor.
Being brave isn’t the absence of fear. Being brave is having that fear but finding a way through it.
在上位的有什么爱好,在下面的人一定爱好得更加利害。
树木有根则繁茂,根腐则树枯萎;鱼有水才能活,水干涸了鱼则必死;灯有油才光亮,油尽则灯灭。人有真精神,保护则长寿,戕害则必死。