递归是计算的根源,因为它需要时间来描述。
Recursion is the root of computation since it trades description for time.
穷人的决策往往理性得令人心碎。
The true capital is the human creativity, not money.
The medium is the metaphor.
自然定律相对于参考系变换的对称性是物理学最基本的原理之一。