"Color is a language; it can convey mood, time, and even character development."
颜色是一种语言；它可以传达情绪、时间甚至角色发展。
Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country.
世界上任何书籍都不能带给你好运，但它们能让你悄悄成为你自己。