学习数学的唯一方法就是做数学。
SINCERITY. Use no hurtful deceit; think innocently and justly, and, if you speak, speak accordingly.
诚恳:不要恶意欺骗人,思想纯洁公正,讲话也是如此。
The only real light is the light of the soul.
你的工作将占据你生活的大部分,唯一能真正感到满足的方法就是做你认为伟大的工作。