学习问题的复杂性通常由假设空间的大小和结构决定。

Spend each day trying to be a little wiser than you were when you woke up.Discharge your duties faithfully and well.Systematically you get ahead, but not necessarily in fast spurts...At the end of the day if you live long enough most people get what they deserve.

知识最大的敌人不是无知，而是知识的幻觉。