The earth's resources are finite, but human ingenuity is not.
真理并不总是美丽的，美丽的话语也不总是真理。
海洋中有一条河流。
Natural experiments are a powerful tool for understanding causal relationships in the real world.
"The only way to do great work is to love what you do."
我不相信运气。我相信努力和坚持。
I'm the reason your boyfriend's so stressed.
"The act of remembering is a way of reclaiming our history and asserting our presence in the world."
记忆的行为是重新夺回我们的历史并断言我们在世界中的存在的一种方式。