Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.
作家必须既是梦想家，又是现实主义者。
True understanding comes from empathy.
我们教授一门学科不是为了培养关于该学科的小型活图书馆，而是让学生自己学会数学思考。
I don’t care what people think of me. I care what I think of myself.
Each song has its own journey.
The progress of mathematics is measured by the number of problems it can solve.