Art

Just pronounce the magic word ‘Art’, and everything is O.K.
—George Orwell, “Benefit of Clergy: Some Notes on Salvador Dali,” Fifty Orwell Essays (1944)

In Literature:

“And then, too, Madame Chebe no longer believed in her husband, whereas, by virtue of that single magic word, ‘Art!’ her neighbor never had doubted hers.” —Alphonse Daudet, Fromont et Risler (c. 1874)

“I wear an amulet, and have a spell of art- magic at my tongue’s end, whereby, sir ancient, neither can a ghost see me, nor I see them.” —Charles Kingsley, Westward Ho! (1855)

See also this previous post about the magic word art.