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Science progresses not just by answering questions, but by asking better ones.

為政仁德深厚,才能使社會安定；做事胸襟寬廣,才能夠容納天下萬民。

That is what learning is. You suddenly understand something you've understood all your life, but in a new way.

我本無才又多病，身體衰弱，沒想到虛名卻傳到了皇帝耳中。