位置测量越精确，动量测量就越不精确，反之亦然。
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
还有什么智慧比善良更伟大？
You can tell whether a man is clever by his answers. You can tell whether a man is wise by his questions.
The core of the poverty trap: Today’s hunger steals tomorrow’s productivity.