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Every mathematical problem is a puzzle waiting to be solved, and every solution is a step towards greater understanding.
每一个数学问题都是一个等待解决的谜题,每一个解决方案都是迈向更深入理解的一步。
The only real voyage of discovery consists not in seeking new landscapes, but in having new eyes.
You must do the things you think you cannot do.
Beliefs have the power to create and the power to destroy.