The only defense against the world is a thorough knowledge of it.

The attosecond timescale is to electron motion what the high-speed camera was to studying animal locomotion.

I don’t think that when people grow up, they will become more broad-minded and can accept everything. Conversely, I think it’s a selecting process, knowing what’s the most important and what’s the lest. And then be a simple man.

When an object is lost， 95% of the time it is hiding within arm’s reach of where it was last seen. Search in all possible locations in that radius and you’ll find it.

变革在开始时最难，在中间最混乱，在结束时最好。