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梦想需要勇气,更需要行动。
数学之美不仅在于其抽象的优雅,还在于其建模和解决现实世界问题的深刻能力。
If a man is proud of his wealth,he should not be praised until it is known how he employs it.
I think it's important to be able to laugh at life.
Every man has a right to his opinion, but no man has a right to be wrong in his facts.
I can dispense with all truth, but not with the search for truth.