No president who performs his duties faithfully and conscientiously can have any leisure.
数学教会我们同时进行逻辑和创造性的思考。
梦想不是追逐的，而是创造的。
The poor face constraints that are often invisible to policymakers.
Innovation is not just about technology; it's about changing the way people think and work.
你可能无法改变现实，但你可以改变你对现实的态度，而这，矛盾的是，会改变现实。
Every site has its own genius loci, our job is to listen to it.