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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 heart is a lonely hunter, and it will always be so.
For the past 33 years, I have looked in the mirror every morning and asked myself: 'If today were the last day of my life, would I want to do what I am about to do today?' And whenever the answer has been 'No' for too many days in a row, I know I need to change something.