音乐可以改变世界，因为它可以改变人们。
Music can change the world because it can change people.
你拥有的最强大的武器是你的声音。
Food security begins with soil security.
Any problem in computer science can be solved with another layer of indirection.
In computer science, we often have to deal with systems that are too complex to understand all at once.
Drawing is rather like playing chess: your mind races ahead of the moves that you eventually make.
免费的疫苗比昂贵的治疗更有价值，但更难推广。