If you don't like something, change it. If you can't change it, change your attitude.
如果你不喜欢某件事，就去改变它。如果你无法改变它，就改变你的态度。
The real challenge is not in solving the equations, but in understanding what the solutions mean.
释义：人必须在现实事务中进行磨练，才能立定脚跟，无论外界是月朗风清还是狂风骤雨，都能保持内心平静坚定。