My mom emailed me a great quote a few days ago.
As readers, we remain in the nursery stage so long as we cannot distinguish between taste and judgment, so long, that is, as the only possible verdicts we can pass on a book are two: this I like; this I don’t like.
For an adult reader, the possible verdicts are five: I can see this is good and I like it; I can see this is good but I don’t like it; I can see this is good and, though at present I don’t like it, I believe that with perseverance I shall come to like it; I can see that this is trash but I like it; I can see that this is trash and I don’t like it.
-W. H. Auden, from A Certain World
I used to feel like I had to finish every book I started, no matter how much I disliked it. Nowadays, with books in the 2nd and 5th categories according to Auden, I feel able to put the book down unfinished and walk away.