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.

Success is not about how much money you make, it's about the difference you make in people's lives.

I believe that the most important single thing, beyond discipline and creativity, is daring to dare.

一本书是一扇门，每个读者都以不同的方式穿过它。