A man should always consider how much he has more than he wants.

真相是想象力的产物。

"The best portion of a good man's life: his little, nameless, unremembered acts of kindness and love."

Sustainability isn't a choice anymore—it's a responsibility we owe to future generations.

人类今天拥有自我毁灭的手段——要么是在完全疯狂的发作中，即在一场大战中，通过短暂的破坏发作，要么是通过对原子技术的粗心处理，通过缓慢的中毒和遗传结构的恶化过程。