The key to solving complex problems is often to find the right abstraction that simplifies the problem without losing its essential features.

光是关键。没有光，就没有图像。

Investors should avoid making decisions based on fear or greed.

宣传之于民主，正如棍棒之于极权国家。

The hunger angel is a metaphor for the hunger that stalks you like a shadow.

Every mental act is an act of adjustment.