You've got to have passion for what you're doing.
"I don't believe in the concept of a 'comfort zone'. I believe in pushing boundaries and exploring the unknown."
改变是不可避免的，但成长是可选的。
"Mathematics is the science of patterns, and nature exploits just about every pattern that there is."
The spread of liberal democracy and the integration of the world economy have created a situation in which the only legitimate form of government is one that is based on popular sovereignty and respects basic human rights.
关于化石燃料的讨论常常缺乏细微差别——我们必须承认它们的历史作用和超越它们的紧迫性。