数学家是把咖啡转化为定理的装置。

The great powers are always searching for opportunities to gain power at the expense of their rivals, and they will use force if they believe it will bring them strategic advantage.

进步的艺术是在变化中保持秩序，在秩序中保持变化。

思想之流，意识之流，总是在流动。

I remember my friend Johnny von Neumann used to say, 'with four parameters I can fit an elephant, and with five I can make him wiggle his trunk.'