一个理论的优雅不仅在于其数学表述,还在于其在一个统一框架下连接不同现象的能力。
"The true challenge of writing is not in finding the right words, but in uncovering the truth they must carry."
And I urge you to please notice when you are happy, and exclaim or murmur or think at some point, 'If this isn't nice, I don't know what is.'