Life is too short to be anything but happy.
The best way to learn mathematics is to do mathematics.
人生的时间是有限并不可变的,所以要有效率地用每一分钟,不用好就是一种浪费。
The essence of mathematics is not to make simple things complicated, but to make complicated things simple.
Live as though you intend to live forever,and work as though your strength were limitless.
To stay ahead, you must constantly adapt and evolve.