The essence of computational complexity is to understand the limits of what can be computed efficiently.
计算复杂性的本质是理解什么可以被有效地计算的极限。
Entanglement is not just a curious feature of quantum mechanics - it is the essential feature.
一个民族的活力随天气而变化。
The key is to keep improving, to keep working hard.
The greatest mistake you can make in life is to be continually fearing you will make one.