在数学中，提出问题的艺术必须比解决问题更有价值。
There is no escape from the labyrinth of existence.
Nothing down there is what they say.
"The truth doesn't set you free; it makes you responsible."
To know this world is to love it, and to love it is to grieve for it.
PAC学习框架提供了一种正式的方法来分析学习算法的效率和有效性。
做出伟大工作的唯一途径就是热爱你所做的事情。