25.
Some of them were obvious, others not so much, and I don't care much for Shakespeare, so I don't have as deep of a knowledge on his quotes as I do Batman. Even so, some of those quotes were taken from Batman works that I'm unfamiliar with, like Dark Knight Returns, where he apparently speaks in a more Shakespeareian way. I knew where quite a few of those Batman quotes originated from before answering though, so at least I can be proud of that.
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~Halo You're not the brightest.
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