The past is not lost; it is encoded within us.
你必须为每一分而战，就像它是最后一分一样。
The only thing that matters is how you feel about yourself.
机器学习的最终目标是制造能够从经验中学习并随时间提高性能的机器。
释义：世间不存在永远轻松顺遂的处境，也没有无法逾越的艰难困境。人生在世，自始至终都有令人快乐的事，也总有让人忧虑的事。要用平和、辩证的心态看待生活，不因一时的困难而气馁，也不因一时的安逸而懈怠。
The poor have no choice but to be honest. The rich can afford to be dishonest.
The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well.