My Italian isn't that good either. 😀
I think I understand what you mean.
The point of the quote was that there is a limit to what material things a person needs in order to have a high standard of living. Beyond that we're just satisfying our ego by acquiring more.
Those of us who have enough have a hard time admitting that.
When I said that needs are relative I meant that our needs depend on what we do. So someone working with technology needs the latest equipment. Someone who raises cattle needs more land. But a single person with a mansion doesn't need three vacation homes. Except for real estate investments which is another discussion.