过去是一个幽灵，萦绕在现在。
The past is a ghost, haunting the present.
我不知道如果我的生活中没有音乐，我会做什么。
People tend to value things more highly when they own them.
The history of the world is the history of the few.
The next chapter of American energy won't be written by clinging to old playbooks, but by those willing to rewrite them.
"I'm not interested in just copying a photograph. I'm interested in the transformation that takes place when you make a painting."
The great challenge of the modern world is to create institutions that are strong enough to govern effectively but also accountable and responsive to the needs of citizens.
"Sometimes you have to be apart from people you love, but that doesn't make you love them any less. Sometimes you love them more."