释义：人生如同一盘棋，在纷繁复杂的世事中，胜负尚未决定，双方都在角力。
I'm not upset that you lied to me, I'm upset that from now on I can't believe you.
"The truth is rarely pure and never simple."
工具变量的美妙之处在于它们让我们以新的视角看世界。
The market is a great teacher, but it charges a high tuition.
People are just as wonderful as sunsets if you let them be. When I look at a sunset, I don't find myself saying, 'Soften the orange a bit on the right hand corner.' I don't try to control a sunset. I watch with awe as it unfolds.