In the preface of her novel Y, Marjorie Celona writes about that perfect letter. "The wishbone, fork in the road, empty wineglass. The question we ask over and over... Coupled with an L, let's make an adverb... a Greek letter (that) joined the Latin alphabet after the Romans conquered Greece in the first century--a double agent: consonant and vowel. No one used adverbs before then, and no one was happy."