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。
The true measure of success is leaving the land better than we found it.
你必须强迫自己考虑反对的论点。尤其是当他们挑战你最喜爱的观点时。