所有发生过一次的事物都不会再发生。但是所有发生过两次的事物必定会第三次发生。
Everything that happens once can never happen again. But everything that happens twice will surely happen a third time.
好的教师不是仅仅传授知识,而是激发学生自己去探索和发现
"I've always been a fighter, and I'll always be one."