Whenever a theory appears to you as the only possible one, take this as a sign that you have neither understood the theory nor the problem which it was intended to solve.
如果你认为一个理论是唯一可能的理论,这表明你既不理解这个理论,也不理解这个理论要解决的问题。
Efficiency is doing things right; effectiveness is doing the right things.
Be the change you wish to see in the world.
A well-designed system should be easy to use, easy to understand, and easy to modify.