To teach how to live without certainty and yet without being paralyzed by hesitation is perhaps the chief thing that philosophy， in our age， can do for those who study it.
因为懂得，所以慈悲。
The tyranny of a prince in an oligarchy is not so dangerous to the public welfare as the apathy of a citizen in a democracy.
快乐的最好方法是给予。
The best way to learn mathematics is to do mathematics.
