如果耕种天地，不将天地整理好，这样就相当于是胡闹。耕种天地，一定要将土地平整翻新，然后再去播种。

NP完全性不仅仅是一个理论上的好奇心；它对实际计算有着深远的影响。

Old minds are like old horses; you must exercise them if you wish to keep them in working order.

故事是我们跨越时间和空间彼此连接的方式。

Reality is a question of perspective; the further you get from the past, the more concrete and plausible it seems.