墨翟我上没有侍奉国君的差事,下没有耕田种地的艰难,我怎么敢放弃读书呢?
Your most unhappy customers are your greatest source of learning.
The rule of recognition is the ultimate rule in a legal system, which identifies the criteria for valid law.
In programming, everything we do is a special case of something more general -- and often we know it too quickly.