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In science, the credit goes to the person who convinces the world, not to the person to whom the idea first occurs.
种一棵树最好的时间是20年前,第二好的时间就是现在。
过去是一个陌生的国度;那里的人做事方式不同。
The essence of education means: one tree shakes another, one cloud pushes another, one soul awakens another.