学习数学的最好方法就是做数学。
Life is short, make it sweet.
"The past is a foreign country; they do things differently there."
有时我们测量事物，看到它们在短期内实际上会损害销售，我们仍然会这样做。
长江后浪推动前浪，世上新人层出不穷。
"Cinema is the art of making the invisible visible."
成功不是幸福的关键，幸福才是成功的关键
The work is a kind of mapping.
In a rapidly changing market, flexibility is the key to success.
