精金美玉般的品性，一定是经历过了，烈火一样的磨砺才修成的；惊天动地的大事业，必须要有履薄冰临深渊般的胆识和魄力，才能成就。

"The only way to do great work is to love what you do."

不该说话的时候却抢着去说，这叫急躁；到该说话的时候却闭口不说，这叫隐瞒；不看别人的脸色便随便插嘴，这叫没有眼色。

Children have real understanding only of that which they invent themselves, and each time that we try to teach them something too quickly, we keep them from reinventing it themselves.