数学的进步归功于那些不是被应用的欲望驱动，而是被发现的喜悦驱动的人。
The advancement of mathematics is due to those who are driven not by the desire for application but by the joy of discovery.
质量不是一种行为，而是一种习惯。
最有趣的艺术是让你思考的艺术。
"You have to be paranoid to survive."
Geometry is knowledge of the eternally existent.
一切皆为腹地。腹地之大，如同整个世界。