我从来不知道我对某事的看法，直到我读到我写的东西。
I never know what I think about something until I read what I've written on it.
Sometimes, I think the reason we hold onto something so tight is because we fear something so great will never happen again.
The world is a puzzle; the pieces are scattered, and no one has the picture on the box.
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
动力学的方程在用变分法的语言表达时是完全的。