Entanglement is not just a curious feature of quantum theory - it is the characteristic trait of quantum mechanics.

It's not about how hard you hit. It's about how hard you can get hit and keep moving forward.

建筑是使必要之物变得美丽的艺术。

Courage is the most important of all the virtues, because without courage you can't practice any other virtue consistently.

有真才能的人不依恃才能，有真学问的人不夸耀学问。

The power of abstraction allows us to see the common threads that run through seemingly disparate problems.