Then, I didn't get any response for like three months and then to my surprise I got a hand-written letter, in kind of a trembling handwriting; I still have it.

直到三个月后,我才收到回信,这竟然是一封手写的回信,爵士用他颤抖的手亲笔写的,我依然珍藏着

耶鲁公开课 - 金融市场课程节选