生活就像一架钢琴,白键代表快乐,黑键代表悲伤。但在人生的旅途中,请记住黑键也能创造音乐。
A well-designed system should be easy to use, easy to understand, and easy to modify.
One man's constant is another man's variable.
The universe is full of magical things patiently waiting for our wits to grow sharper.