有时你建起心墙并非为了远离人群，而是为了看清谁在乎去推倒它。
Sometimes you put walls up not to keep people out，but to see who cares enough to break them down.
幸福是由小瞬间构成的。
心灵不过是人类经验的总和，从依赖于经验个体的角度来考虑。
"The challenge of biography is not just to record, but to illuminate."
If the people cannot trust their government to do the job for which it exists - to protect them and to promote their common welfare - all else is lost.
Sustainability isn't a cost—it's an investment in our future.
教育的艺术必须从教育的科学中汲取其法则。
我们每一次的观察都是向解开宇宙之谜迈近的一步。