There once was a time when you could include a few lines of a song or poem, or quote another book, and no one cared. That time is gone.
To use any quoted material from a work under copyright, you must have official permission from the rights holder. In the case of a published work, this is almost always the publisher, and it will cost money. Expect to pay $250-$500 for up to 100 words for the first 5,000 copies sold (although some may set the maximum at 2,000), after which an additional fee may be required. Fees of $1,000 and more are not out of the question.
Phrases that have been used so often ("Make My Day.") can still be used with impunity, although even then it's technically a copyright violation.
If you're determined to use a bit of copyrighted material, it's your job to obtain the necessary permission. It takes time and money.
Be aware that when it comes to copyrighted material these days "just a little" is too much.
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