The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.

The only phrase I've ever disliked is, 'Why, we've always done it that way.' I always tell young people, 'Go ahead and do it. You can always apologize later.'

Life is a journey, and every step is important.

我不想仅仅作为一名网球选手被记住。我想作为一个好人被记住。