Hmm, I know the exact kind of app you mean. I long time ago I built a web app that let you create and filter by author, topic/subtopic and keyword and displayed the results nice and quotey with translucent giant floating quotation marks in the background and all that. People liked using it.
Could be nice to see it revive natively if no one suggests something perfect…
If you do go the Obsidian route, I’m sure you could style just the quote pages to be more contemplative.
I just keep them with all my other random (plain text) notes, usually one to a note, general subject and speaker/writer in the title, quote and attribution in the body, tagged #quotes and maybe tags relating to the quote topic.
Easy to file, easy to search. Finding all quotes by the same author is as simple as searching on the #quotes tag and the author’s name.
I’ve been putting all mine into Obsidian and tagged them #thoughts and then use the Smart Random Note plugin to resurface them based on a search for the tag. Manually right now but looking at automating it to pop one up into my daily note
Mark Twain - Facts
Get your facts first, and then you can distort them as much as you please.
I use aliases to get the additional thoughts in there and also link them from MOC type notes on basic themes.