教育体系是以感官基础，以思考为过程，以自由为目的。
The most controversial thing I have ever done is to stick around.
The modern world has made us free, but it has also made us miserable.
"The only thing stronger than the desire to live is the desire to love."
Don’t let the noise of others’ opinions drown out your own inner voice.
A true mathematician is always a student, always learning.
