君子掌权临事，那么连小人都能变为君子，处在这种情况里，还不能成为君子的，那就是货真价实的小人了；小人弄权擅事，那么一般人都沦为小人，处在这种局面下，仍然不沦为小人的，那就是不折不扣的君子了。
It is India that gave us the ingenious method of expressing all numbers by means of ten symbols, each symbol receiving a value of position as well as an absolute value.
Time doesn’t heal, it just teaches you how to live with the wound.
好奇心是所有伟大数学发现背后的驱动力。