爱是生命的能量。
The only limit to our realization of tomorrow is our doubts of today.
Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.
The best way to learn mathematics is to do mathematics.
发现的快乐无疑是推动科学前进的动力。
Your work is going to fill a large part of your life， and the only way to be truly satisfied is to do what you believe is great work.