The only person you should try to be better than is the person you were yesterday.

Quality is never an accident; it is always the result of intelligent effort.

To me, fearless is not the absence of fear. It's not being completely unafraid. To me, fearless is having fears. Fearless is having doubts. Lots of them.

Silence can be as powerful as words, if you know how to listen.

介导我们触觉的分子是我们日常体验的无名英雄。