"You have to believe in yourself when no one else does—that's what makes you a champion."

A man's character is his fate.

无论生活看起来多么艰难，总会有你可以去做，并且取得成功的事情。最重要的是你不能放弃。

系统辨识的挑战不仅在于拟合数据，还在于提取有意义且可推广的模型。