From Who the Hell’s in It: Conversations with Hollywood’s Legendary Actors, by Peter Bogdonavich:
In a lifetime of almost thirty years as a top-ten box-office attraction (plus twenty before that as a not unpopular star actor), Wayne’s accumulated persona had even before his death attained such mythic proportions that by then the most myopic of viewers and reviewers had finally noted it. He brought to each new movie (good or bad) a powerful resonance from the past — his own and ours — which filled the world with reverberations above and beyond its own perhaps undistinguished qualities. That was the true measure of a great movie star of the golden age.