A good article from the NY Times about an art collecting couple from Spain: Atypical Collectors With Art to Share
Still, they said, even then what really interested them was not to possess art, but to participate in social and cultural change through an intellectual engagement with artists who were rebelling against the existing art world.
Unsurprisingly, then, they also see collecting as an art. "That's what Duchamp said," Mr. Herbert said later over lunch, "You can 'paint a collection' together by choosing your works and bringing them into a context. We try to do that, and I think that in Barcelona you see a kind of vision of a whole."