我们都是自己的幽灵，徘徊在我们曾经生活过的地方。
We are all ghosts of ourselves, haunting the places we once lived.
The beauty of mathematics lies in its simplicity and universality.
I'm kind of the girl who's a little bit of a tomboy but also really girly.
译文：凡是一个人要做一件事情，就必须把全部的精神都集中在这件事情上，从开头到结尾都不能松懈，不可以看到别的就改变主意，做着这件事又想着那件事，坐在这座山上又望着那座山。一个人如果没有恒心，一辈子都不会有什么成就。
The stream of thought is a stream of survival.