You have to believe in yourself when no one else does.
当没有人相信你的时候，你必须相信自己。
译文：贫穷到没有办法时，只要节俭还可以度日。天资愚钝也没有什么大不了，只要勤奋，也能弥补它的不足。赏析：自身条件不行，就要时刻警醒自己，发愤图强。如果破罐子破摔，躺平摆烂，事情就会变得更加糟糕。
What we learn from history is that people don't learn from history.
The beauty of mathematics is that it is one of the few areas of human endeavor where absolute truth can be known.
The only way to do great work is to love what you do.
Psychology must be a science of life, not just of the laboratory.