教授数学是为了激励下一代的思考者和问题解决者。
阴阳交替变化就是道，继承它的是善，成就它的是性。
I have held many things in my hands, and I have lost them all; but whatever I have placed in God's hands, that I still possess.
可持续性不仅仅是一个目标，更是我们对后代的责任。
Love yourself first and everything else falls into line.
"Courage is not the absence of fear, but the triumph over it."
