生活就像一面镜子，你朝它皱眉，它也朝你皱眉；你微笑，它也报以微笑。
Life is like a mirror, if you frown at it, it frowns back; if you smile, it returns the greeting.
The ultimate goal of machine learning is to make machines that can learn from experience and improve their performance over time.
You are always a valuable, worthwhile human being — not because anybody says so, not because you're successful, not because you make a lot of money — but because you decide to believe it and for no other reason.
采撷花草编成同心结，想要送给知音人
生活中唯一的限制是你自己设定的。