We must mine coal responsibly today so that our children inherit both energy security and a healthy environment.
The only purpose for which power can be rightfully exercised over any member of a civilized community， against his will， is to prevent harm to others.
实现真正成功的唯一方法是为他人创造价值。
我不会坐在这里说我是个榜样什么的，但我确实认为我有责任。
Memory is the way we keep telling ourselves our stories - and telling other people a somewhat different version.
It is a mistake to confound strangeness with mystery.