"The past is never dead. It’s not even past."

没有道德或不道德的书，只有写得好或写得差的书。

Pain is temporary. It may last a minute, or an hour, or a day, or a year, but eventually it will subside and something else will take its place. If I quit, however, it lasts forever.

未来出行取决于技术与人类需求的平衡。