With her story, "Everyday Use," Alice Walker is saying that art should be a living, breathing part of the culture it arose from, rather than a frozen timepiece to be observed from a distance. To make this point, she uses the quilts in her story to symbolize art; and what happens to these quilts represents her theory of art.
The quilts themselves, as art, are inseparable from the culture they arose from. (topic sentence) The history of these quilts is a history of the family. The narrator says, "In both of them were scraps of dresses Grandma Dee had worn fifty and more years ago. Bits and pieces of Grandpa Jarrell's Paisley shirts. And one teeny faded blue piece . . . that was from Great Grandpa Ezra's uniform that he wore in the Civil War." So these quilts, which have become an heirloom, not only represent the family, but are an integral part of the family.
Walker is saying that true art not only represents its culture, but is an inseparable part of that culture. The manner in which the quilts are treated shows Walker's view of how art should be treated. Dee covets the quilts for their financial and aesthetic value. "But they're priceless!" she exclaims, when she learns that her mother has already promised them to Maggie. Dee argues that Maggie is "backward enough to put them to everyday use." Indeed, this is how Maggie views the quilts. She values them for what them mean to her as an individual. This becomes clear when she says, "I can 'member Grandma Dee without the quilts," implying that her connection with the quilts is personal and emotional rather than financial and aesthetic. She also knows that the quilts are an active process, kept alive through continuous renewal.