你必须花费一些精力和努力才能看到数学的美。
You have to spend some energy and effort to see the beauty of math.
Happiness is not something ready made. It comes from your own actions.
种树的最佳时间是25年前,第二好的时间是今天。
Our Lord has written the promise of resurrection, not in books alone, but in every leaf in springtime.
A good film is one that leaves the audience with more questions than answers.