我不相信过度分散投资。我更喜欢集中在几个好主意上。
The best way to help people is not to do things for them, but to help them do things for themselves.
我们需要创造性地思考如何解决世界上最大的问题。
The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little.