研究量子引力对于理解早期宇宙至关重要。

I write to explore the things that scare me.

A leader's job is not to do the work for others, but to help others figure out how to do it themselves.

The chief beauty about time is that you cannot waste it in advance. The next year, the next day, the next hour are lying ready for you, as perfect, as unspoiled, as if you had never wasted or misapplied a single moment in all your life. You can turn over a new leaf every hour if you choose.

The difference between ordinary and extraordinary is that little extra.