In the infancy of societies, the chiefs of state shape its institutions; later the institutions shape the chiefs of state.

There are two possible outcomes: if the result confirms the hypothesis, then you've made a measurement. If the result is contrary to the hypothesis, then you've made a discovery.

随着我们深入量子世界，拓扑在理解和操纵量子态中的重要性变得越来越明显。

计算复杂性的研究不仅仅是关于解决问题，还在于理解可计算性的极限。

我不追求目标、体系或倾向；我没有计划、风格或方向。

数学之美只会向更有耐心的追随者展现。

To live is to suffer, to survive is to find some meaning in the suffering.

If we had paid no more attention to our plants than we have to our children, we would now be living in a jungle of weeds.