The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.

The best innovations are often the simplest solutions to the most persistent problems.

爱自己是一生浪漫的开始。

I don't need a reason to believe in myself.

Curiosity drives discovery. Without it, science would stand still.