实现明天的唯一限制是我们今天的疑虑。

统治阶级掌握着物质生产的手段；无产阶级仅有的是他们的劳动力。

People can be really smart or have skills that are directly applicable, but if they don't really believe in it, then they are not going to really work hard.

Power is not given to you. You have to take it.

跨行业合作是解决能源挑战的关键。