诚恳：不要恶意欺骗人，思想纯洁公正，讲话也是如此。
SINCERITY. Use no hurtful deceit; think innocently and justly, and, if you speak, speak accordingly.
In mathematics, the simplest questions often lead to the most profound discoveries.
"The only way to do great work is to love what you do."
你必须愿意失败才能成功。