It is one thing to show a man that he is in error, and another to put him in possession of truth.
向一个人展示他在错误中是一回事，让他掌握真理是另一回事。
The greatest art is always on the edge of failure.
无论做任何事情，总逃不过“持之以恒”四个字，如果三天打鱼两天晒网，即使再聪明、再有天赋，也不会有什么成就。
风俗习惯是人类生活的重要指南。