I'm not afraid to stand up for what I believe in.
The natural and moral world is the two-fold object of man's rational care.
知足者常乐,追求无止境的欲望永无满足。
历史学家的首要职责是如实讲述他所见的真相,无论这会取悦还是触怒何人。
Sustainability isn't a trend—it's a responsibility we owe to future generations.
Sustained outrage makes you stupid.
"In the end, we will remember not the words of our enemies, but the silence of our friends."