“I divide my officers into four groups. There are clever, diligent, stupid, and lazy officers. Usually two characteristics are combined. Some are clever and diligent — their place is the General Staff. The next lot are stupid and lazy — they make up 90% of every army and are suited to routine duties. Anyone who is both clever and lazy is qualified for the highest leadership duties, because he possesses the intellectual clarity and the composure necessary for difficult decisions. One must beware of anyone who is stupid and diligent — he must not be entrusted with any responsibility because he will always cause only mischief.” by Kurt von Hammerstein.
最糟糕的是第4種，蠢並且很勤奮的人。會不斷產生trouble。
聰明和勤快的，做參謀，但做不了leader
聰明和懶的，做最高的leader
蠢和懶的，做普通士兵
