To some art buffs, it sounds like lunacy: Boston's Museum of Fine Arts, this morning's Globe tells us, is planning to sell a bunch of paintings by big-name artists to raise the money to buy a much more obscure one — "Man at His Bath," a male nude by the Impressionist painter Gustave Caillebotte. Yet buying this painting, even at the hefty price of $17 million, would broaden and deepen the MFA's collection. It's precisely the kind of bold, adventurous move that a world-class museum ought to be making.

Caillebotte turns out to be an important figure in the history of Impressionism. That's partly because of his artwork, which featured humble scenes viewed from unusual perspectives, but also because of his later role as an art patron and collector himself.

Selling eight paintings to buy "Man at His Bath" is controversial for some obvious reasons: Several of the paintings headed to the auction block are by much more famous artists, including Claude Monet, Paul Gauguin, and Camille Pissarro. And those paintings were given to the MFA by generous donors who, perhaps, wanted the museum to have them forever.