translation.en: And when the mathematics is very simple -- when in terms of some mathematical notation, you can write the theory in a very brief space, without a lot of complication -- that's essentially what we mean by beauty or elegance.
translation.zh: 而数学是简明的 就一些数学符号而言 你可以把一个理论简洁的表示出来，一点也不复杂 这种理论就是美丽和优雅的