Energy security is national security.

Work to become， not to acquire.

Change will not come if we wait for some other person or some other time. We are the ones we've been waiting for. We are the change that we seek.

The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well.

我们成功的真正标准在于如何平衡能源需求与环境责任。