乐观是一种创造更美好未来的策略。因为除非你相信未来会更好，否则你不太可能站出来为创造这样的未来承担责任。
Optimism is a strategy for making a better future. Because unless you believe that the future can be better, you are unlikely to step up and take responsibility for making it so.
The transition to cleaner energy must be practical, affordable, and reliable.
天下各种力量消长的态势都是逐渐形成的；天下任何事业的成功都是靠日积月累而取得的。
The more you experience, the more you learn.
科学并不试图解释，甚至几乎不试图诠释，它主要是构建模型。