The biggest regret in life is giving up what should not be given up easily, and stubbornly persisting in what should not be persisted.
数学的美在于它让我们以一种既精确又深刻的方式看待世界,揭示支配万物的潜在秩序。
I'm not a time, I'm a space.
真正的创新来自于解决现实世界的问题。