Abstraction is the process of taking an idea from its original text and making it usable in a general sense without the support of added context. To abstract an idea you rewrite it in your own words as if you’re writing for someone else who doesn’t have the context of its source.
Use literature notes to capture what you don’t want to forget or what you might use in your own thinking. Be very selective and keep the notes short. Record the bibliographic details as you take the notes. Then archive the literature note in the reference folder.