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。

The pursuit of science is more than the pursuit of understanding. It is the pursuit of a kind of wisdom that comes from knowing how much we do not know.

I sent my Soul through the Invisible, Some letter of that After-life to spell: And by and by my Soul return'd to me, And answer'd "I Myself am Heav'n and Hell."

The laws of behavior are as precise as those of physics.

城市是我们文明的终极表达。

Investing in environmental technology is investing in the future.

我总是努力比昨天的自己更好。