The legendary film-maker says completing ten films and leaving people wanting more "sounds right", although he added that "nothing is etched in stone".
Speaking during a Q&A for his new Western, The Hateful Eight, the 51-year-old star was questioned about what he'll do if he's not working in cinema, to which he replied: "Writing plays and books, going gracefully into my tender years.
"I don't believe you should stay onstage until people are begging you to get off.
"I like the idea of leaving them wanting a bit more. I do think directing is a young man's game, and I like the idea of an umbilical cord connection from my first to my last movie. I'm not trying to ridicule anyone who thinks differently, but I want to go out while I'm still hard.
"I like that I will leave a 10-film filmography, and so I've got two more to go after this. It's not etched in stone, but that is the plan. If I get to the 10th, do a good job and don't screw it up, well that sounds like a good way to end the old career."
However, Quentin - whose films include Pulp Fiction and Django Unchained - later added: "If, later on, I come across a good movie, I won't not do it just because I said I wouldn't. But 10 and done, leaving them wanting more - that sounds right."