Life is fraught with opportunities to keep your mouth shut.
生命中你有许多机会闭紧嘴巴。
"Home is not where you are from, it is where you belong."
When you light a candle, you also cast a shadow.
情感的尾巴摇动着理性的狗。
教育的第一步是了解孩子。
真正的数学家始终是学生，永远在学习。