唯一值得被称为自由的自由是追求我们自己的幸福，以我们自己的方式，只要我们不试图剥夺他人的自由，或妨碍他们争取幸福的努力。
The only freedom which deserves the name is that of pursuing our own good in our own way， so long as we do not attempt to deprive others of theirs， or impede their efforts to obtain it.
Mathematics is a creative endeavor, just like art or music.
You better lose yourself in the music, the moment, you own it, you better never let it go.
化学工业是现代文明的支柱，我们必须以应有的尊重和责任对待它。
