In the light of what Proust wrote with so mild a stimulus, it is the world's loss that he did not have a heartier appetite. On a dozen Gardiner's Island oysters, a bowl of clam chowder, a peck of steamers, some bay scallops, three sauteed soft-shelled crabs, a few ears of fresh picked corn, a thin swordfish steak of generous area, a pair of lobsters, and a Long Island Duck, he might have written a masterpiece.