The best ideas often come from those closest to the problem.
"The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart."
[如果不追败寇],那么残暴作乱的人就得以活命,天下的祸害也没有除掉,这是残害民宗的父母并且深深地残害天下的人,没有比这更大的不义了。 
君子的学问,从来不会脱离实践去空谈认识,这是必然的。