快乐不是一件自我存在的东西,它仅是与其他不快乐事情的一个相对比照,这就是快乐的整个情况。
Innovation and technology will be key to meeting the world's growing energy needs while reducing environmental impacts.
艺术应该打破生活与表现之间的界限。
The key to progress in science is persistence and an open mind.