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So this is supposed to be about the how, and when, and why, and what of reading -- about the way that, when reading is going well, one book leads to another and to another, a paper trail of theme and meaning; and how, when it's going badly, when books don't stick or take, when your mood and the mood of the book are fighting like cats, you'd rather do anything but attempt the next paragraph, or reread the last one for the tenth time.