The truth is rarely pure and never simple.
每部电影都是一次旅程，你必须对旅程带你去的地方持开放态度。
The key to a happy life is not in avoiding problems, but in learning how to deal with them effectively.
And when you do I want you to know this， remember this: there is no such thing as failure. Failure is just life trying to move us in another direction. Now when you’re down there in the hole， it looks like failure. So this past year I had to spoon feed those words to myself.
The PAC learning framework provides a formal way to quantify the learnability of a concept class.
"The world is full of obvious things which nobody by any chance ever observes."
