The harder you work for something, the greater you’ll feel when you achieve it.
你为某件事付出的努力越多,实现时的成就感就越大。
凡是大国之所以不攻打小国的,必定是由于这个小国粮食充足,城郭修筑坚固,上下和谐一心。 
Knowledge is the most valuable resource in the universe.
The truth is not always what we want to hear, but it is what we need to know.