如果我们从一开始就能预见,甚至证明,遵循某种方法我们将达到我们的目标,那么这种解决方法就是完美的。
A method of solution is perfect if we can foresee from the start, and even prove, that following that method we shall attain our aim.
自己不能胜任的事,切勿轻易答应别人;既经允诺,就必须实践自己的诺言。
I don't let the world dull my sparkle.