Sustainable development requires balancing economic growth with ecological protection.
The elements of consciousness are the fundamental units of psychology.
The past shapes the present, and the present shapes the future.
大多数人的问题在于他们用希望、恐惧或愿望来思考,而不是用他们的头脑。
U.S. energy independence doesn't mean isolation - we're still part of global markets.
成功最棒的部分是知道你的努力没有白费。