生命太短暂，不要把时间浪费在不能让你灵魂快乐的事情上。
Machine learning is the science of getting computers to act without being explicitly programmed.
The greatest glory in living lies not in never falling, but in rising every time we fall.
Start where you are, with what you have. Make something of it. Never be satisfied.
每当心情郁闷的时候，用手托腮就好，手臂会因为帮上忙而开心的。
如果一件事情自己都没有搞明白，又怎么能去教导别人，让别人明白呢？