All the effects of nature are only the mathematical consequences of a small number of immutable laws.
睡眠不是奢侈品,而是大脑的必需品。
用程序证明四色定理不会改变数学——它只是证明了这个挑战了一个世纪的定理是一个有限的问题。
Even if I knew that tomorrow the world would go to pieces, I would still plant my apple tree.