Don't just read it; fight it! Ask your own questions, look for your own examples, discover your own proofs. Is the hypothesis necessary? Is the converse true? Where does the proof use the hypothesis?
In any relationship that comes to an end, there's never just a baseline reason why. You say, 'Oh, I broke up with my girlfriend. ' Someone says, 'Why?' You say, 'Well, you got three hours? And then maybe after I tell you my version, you've got to talk to her.