我们都是自己经历的囚徒，而自由的关键在于理解这些经历。

"Tennis has given me everything, and I want to give something back."

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

Those of us who have been fortunate have a duty to give back.Whether one gives a lot as one goes along as I do, or a little and then a lot (when one dies) as Warren does, is a matter of personal preference.