"When you are writing, you are trying to find out something which you don't know."

弦理论是二十一世纪物理学的一部分，偶然落入了二十世纪。

The pursuit of power is the primary goal of all great powers, and this pursuit often leads to conflict.

灵魂不是一种事物，它是一种事物的品质或方面，而事物的品质是最珍贵的。

I have already carried out my duty. I have proved the Poincaré conjecture and I have nothing more to do in mathematics.

社会源于我们的需求，政府产自我们的邪恶。前者通过凝聚我们的友爱，积极地增进我们的幸福，后者通过遏制我们的恶行，消极地促进我们的福祉。前者鼓励交往，后者制造差别。前者是庇护人，后者是惩罚者。