你不必完美。做你自己就好。

The true power of mathematics is not in its complexity, but in its simplicity and elegance.

译文：少年不知道早起勤奋学习，到老了后悔读书少就太迟了。赏析：人在年轻时，精力旺盛，正是勤奋读书，努力奋斗的时候。