No president who performs his duties faithfully and conscientiously can have any leisure.
量子力学不仅仅是一个理论,它是一个从根本上改变了我们对现实理解的框架。
When you are doing what you love, you don't feel the pressure.
幸福不能被追求;它必须随之而来。
盈利和可持续性并不是对立的;它们是一枚硬币的两面。一个危害环境的企业最终会伤害自己。