当我们自由行动时，为了行动本身而不是为了其他动机，我们学会变得比我们原来更多。

The scientific study of behavior must be based on objective, measurable data.

Attosecond science allows us to capture the fastest motions in the microcosm, like freezing the wingbeat of a hummingbird.

A person must go through hard work to achieve something.

过去是远处的一支蜡烛：近得让你无法放弃，远得无法给你安慰。