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Mathematics is a conversation between the past and the future.

解釋：將自己的利益給了別人，別人也將會把實惠返回給自己；將自己的怨恨發泄給別人，禍害也將會降臨到自己身上。

The best music comes from the heart.

The art of competing, I’d learned from track, was the art of forgetting, and I now reminded myself of that fact. You must forget your limits. You must forget your doubts, your pain, your past.

The most important skill for a computer scientist is problem-solving.