The only first-hand knowledge I've gained is through my children. I've gone through the process of giving birth, and that is about as first-hand as they get. At the same time, observing the process of growth after a person is born adds a startling new perspective to one's understanding of people. This is extremely important.
我經歷過生產過程，那也是第一個人類所經歷的，絕對是一手的、原始的經驗；同時，我觀察一個人出生以後的成長過程，於是對人的理解，驚天動地地增加了一個角度，這點非常重要。