I'm keeping a GitHub repository that contains my personal notes. While I feel comfortable with releasing most of the things in the public domain, that repository does contain some quotes, mostly from the books I liked (random example), that might be considered as proprietary.
Even though I'm well aware that I could re-use these quotes (since they're just a sentence or two long) under fair use, I'm not sure if releasing them under public domain is a copyright infringement or not. If it is, what can I do to exclude the files containing the quotes from the license?