Success is not about how much money you make, it’s about the difference you make in people’s lives.

The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.

最伟大的旅程是那些在不知不觉中改变我们的旅程。

Those who deny freedom to others, deserve it not for themselves; and, under a just God, can not long retain it.

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。