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.

The true measure of success is how many times you can bounce back from failure.

The method of psychology must be as exact as the methods of the natural sciences.

我不喜欢被贴标签。我不仅是R&B歌手，也不仅是流行歌手，我是一个艺术家。