The best management is a true science, resting upon clearly defined laws, rules, and principles.

"Sometimes, the hardest thing and the right thing are the same."

The only purpose for which power can be rightfully exercised over any member of a civilized community， against his will， is to prevent harm to others.

发现现象原因或真实假设的艺术，如同破译的艺术，其中巧妙的猜想常缩短道路。