人们是否在使用清洁能源、交通运输是否在优化、互联网是否在变得更好等等，这些工作都很重要。即使是少数人也可以影响这个世界。
It really matters whether people are working on generating clean energy or improving transportation or making the Internet work better and all those things. And small groups of people can have a really huge impact.
"The imagination is a muscle. If you don't use it, it atrophies."
