Every tree planted today is an investment in a greener tomorrow.

No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.

The greatest rewards come from working on something that nobody else is working on.

认为你不够好是一个谎言。认为你一文不值是一个谎言。

我不是悲观主义者，我是一个受过悲观主义训练的乐观主义者。

The only thing that is truly important is the difference you make in the world.

有时候我开始说一句话，甚至不知道会说到哪里。我只是希望能在过程中找到答案。