The only way to learn mathematics is to do mathematics.
The mathematician's patterns, like the painter's or the poet's, must be beautiful; the ideas, like the colors or the words, must fit together in a harmonious way.
The only thing that stands between a man and what he wants from life is often merely the will to try it and the faith to believe that it is possible.
城市的建筑是它随时间推移的构建。
The only art I'm interested in is the art that changes the way people see the world.
领导力不在于掌控，而在于照顾你负责的人。