But it is only in the twentieth century that this technique is fully developed by modernists. Marcel Proust is often presented as an early example of a writer using the stream of consciousness technique in his novel sequence "À la recherche du temps perdu" (1913–1927) ("In Search of Lost Time"), but Robert Humphrey comments that Proust "is concerned only with the reminiscent aspect of consciousness" and that he "was deliberately recapturing the past for the purpose of communicating; hence he did not write a stream-of consciousness novel". Novelist John Cowper Powys also argues that Proust did not use stream of consciousness: "while we are told what the hero thinks or what Swann thinks we are told this rather by the author than either by the 'I' of the story or by Charles Swann."