I’d try make the not title the killer part of the quote or a good one phrase summary of the quote.
In the note include the quote and then [[link]] to the Author and any subject matter.
The Author and subject matter notes don’t need to exist yet, and they’ll still show up in the graph. And as both are text in your notes, they’ll both show up in search.
As things develop, you can start to. Hold the Author and Subject Matter notes into something like Maps Of Content (MOCs).