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The poor have no choice but to be honest. The rich can afford to be dishonest.
If somebody offers you an amazing opportunity but you are not sure you can do it, say yes – then learn how to do it later!
The essence of mathematics lies in its freedom.
我们今天种植的每一棵树都是留给后代的遗产。
变化的速度要求我们忘记的和学习的一样多。