The key to credible causal inference is not just the method, but how well the method fits the question at hand.
可持续性不仅仅是一个流行词;它是我们对后代的责任。
I'm just like anyone. I cut and I bleed. And I embarrass easily.
在一年之中,最重要的事情是种植谷物,对于十年的打算,最重要的事情是种植树木。
Positive emotions broaden our awareness and allow us to see more possibilities.