The beauty of mathematics is that it allows us to explore the universe without ever leaving our chairs.

Remember, if you ever need a helping hand, it's at the end of your arm, as you get older, remember you have another hand: The first is to help yourself, the second is to help others.

La historia de un país no se puede entender sin conocer su literatura.

我是一个传奇。我也是有史以来最伟大的运动员。