I have looked in the mirror every morning and asked myself: If today were the last day of my life, would I want to do what I am about to do today? And whenever the answer has been No for too many days in a row, I know I need to change something.

当我历数了人类在艺术上和文学上所发明的那许多神妙的创造，然后再回顾一下我的知识，我觉得自己简直是浅陋之极。