The most profound theories often arise from the simplest observations.

The only thing that can make you free is your own mind.

Every man's life is a fairy tale written by God's fingers.

The greatest glory in living lies not in never falling, but in rising every time we fall.

心智首先是生存的工具，然后才是思考的工具。

数学中最重要的技能是提出正确问题的能力。

野心是人类心中最后死去的情感。

预测未来的最好方式就是创造未来。