教妇初来，教儿婴孩。
出自北齐·颜之推《颜氏家训·教子》引谚语。教育媳妇，要趁她刚嫁到婆家之时；教育孩子，应当赶在孩提时代，教育要掌握最适宜的时间才会有效果。
I’ve always been attracted to the idea of a voice that is absolutely authoritative and yet absolutely humble.
I don't want to be a teacher. I want to be a friend.
"The best way to get things done is to simply begin."
数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。