真正的朋友，不是在一起有聊不完的话题，而是在一起，就算不说话，也不会感到尴尬。
True friends are not those who have endless topics to talk about, but those who can stay together without feeling awkward even if they don't speak.
Writing is a way of talking without being interrupted.
The challenge of our time is to harness energy without harming the planet.
未来最成功的社会将是那些能够将市场的效率和技术活力与国家提供的社会安全网和政治稳定结合起来的社会。
The past is a foreign country; they do things differently there.
