一流的智力的考验是同时持有两种相反的观点，并且仍然保持运作的能力。
The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.
The most effective leaders are those who lead by example.
Education is the most powerful weapon which you can use to change the world.
Life is nasty, brutish, and short.
"Every idea has a motor consequence."
使用，而不要滥用...节制和过度都不会使人快乐。