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Reason obeys itself; and ignorance submits to whatever is dictated to it.
如果两分钟后觉得无聊,就试四分钟。如果仍然无聊,就八分钟。然后十六分钟。然后三十二分钟。最终你会发现它一点也不无聊。
The best mathematics is not just logical—it is intuitive and beautiful.