The attosecond timescale is to electron motion what the high-speed camera was to studying animal locomotion.
The people who are crazy enough to think they can change the world are the ones who do.
恐惧是自由的敌人。
如果成功仅仅被定义为规模扩张或为增长而增长，那这种成功是不可持续的。没有情感意义的成功是非常肤浅的。