I think it's rarely about what you actually learn in class—it's mostly about what questions you ask yourself.
我并不完美。我和其他人一样会犯错。
幸福的幸里面是一个“幸”,不是一个“辛”。  或者理解成,Y=Why=为什么,I=我。幸福里面没有为什么,只有我。 
The future of energy is not either/or - it's about finding the right mix of all available solutions.