最持久的变化来自于理解问题的根本原因，而不仅仅是症状。
"You have to dream, you have to have a vision, and you have to set a goal for yourself that might even scare you a little because sometimes that seems far beyond your reach."
读书最要紧的就是勤学好问，做人最要紧的就是实实在在而持之以恒。
The essence of mathematics is not to make simple things complicated, but to make complicated things simple.