死亡本身并不可怕;但我们害怕成为未知,去向未知。
Sometimes, the smallest step in the right direction ends up being the biggest step of your life.
"In observational studies, we often have to rely on assumptions that are not directly testable."
力量不是来自你能做什么,而是来自克服你曾经认为自己无法做到的事情。