我不认为你需要悲伤才能写出一首悲伤的歌。
I don't think you need to be sad to write a sad song.
最深刻的定理往往源于最简单的观察。
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 pursuit of knowledge is a journey without end, but each step brings its own rewards.
"Attention is the selective mechanism of consciousness."