The human being cannot live in a condition of emptiness for very long: if he is not growing toward something, he does not merely stagnate; the pent-up potentialities turn into morbidity and despair, and eventually into destructive activities.

Chainsaws don't destroy forests—short-term thinking does.

世界需要可持续的解决方案，而不仅仅是临时补救。

在数学中，最简单的问题往往导致最深刻的发现。