The only complaint we have about the Spanish-language bookstore that opened this spring on Roosevelt Row is that it was not permanent. But that's a big part of the charm of Pablo Helguera's "Librería Donceles," a traveling exhibit that incorporated more than 12,000 used books and a lot of elbow grease to create a temporary bookstore with departments ranging from history to science to children's books. The (mostly vintage) books were amazing to comb through, even for those of us not well-versed in Spanish. And on top of that, the artist created an environment evocative of your favorite bookstore: homey and cozy, with art on the walls, rugs on the floor, salons, and even impromptu guitar sing-alongs. Most important, the show made a vital observation: that metro Phoenix doesn't actually have a permanent Spanish-language bookstore. Next up, life needs to imitate art.