Sometimes the most profound mathematics comes from playing with simple ideas until they reveal their hidden complexity.
有时最深刻的数学来自于玩弄简单的想法,直到它们展现出隐藏的复杂性。
气候变化是本世纪的战斗,我们必须赢得胜利。
The most important thing in filmmaking is to tell a story that matters.