数学是一种创造性的努力，就像艺术或音乐一样。
Mathematics is a creative endeavor, just like art or music.
The artist must be a bridge between the visible and the invisible.
悲观主义者是这种人：当他可以从两种罪恶中选择时，他把两种都选了。
Without a strong team, even the best idea will fail.
The best buildings are those that disappear into use.