Gather items from everywhere, as links?

V3 Mac. Am I in the right forum for general help?
Writing in several documents over time, knowing that whenever I use a sentence about a particular subject I shall want to gather it into a collection in another specific document, how can I gather those sentences. I do not want to copy paste them. I would quite like them to appear in the other document as a list of links/references to these sentences so that later I may click the links to choose which of them I might use. That would mean that when following the link it would need to highlight (or something) the sentence, since it might be the only one that is of interest in a long document.
I can only find how to link the other way; from a sentence to a whole document.
I hope this is clear.
Thank you.