Simon Heffer in The Telegraph:
In one respect Marcel Proust is like Richard Wagner: each created one world-famous work of such scope and depth that people hesitate to explore them. Complexity should never be a barrier to intellectual curiosity, especially when the pleasure and enlightenment to be obtained are of the magnitude both these artists offer. Wagner's Ring cycle, around 16 hours of drama and music in four separate operas, is one of the greatest achievements in music and also one of the most rewarding. Likewise, the sequence of seven novels that make up Proust's À la recherche du temps perdu is to my mind the finest work of fiction ever written in any language. It leaves the reader with an altered understanding of the nature of reality, human relationships and perceptions. Proust wrote the novels between 1909 and his death in 1922 at the age of 51. One wonders what he might have accomplished had he lived a normal span. In one sense he was a late casualty of the Franco-Prussian war of 1870-71: he was born not long after the lifting of the Siege of Paris to a mother whose considerable wealth had not helped her, in those circumstances, find sufficient food to sustain her during her pregnancy. Her baby was a weakling and it was feared he would not live. Throughout his life Proust was subject to ill health, its effect made worse by his resolute hypochondria.
…The novels were hugely influential on writers all over the world, in that they introduced the idea of writing about “streams of consciousness”. Through Proust's ubiquitous narrator, they relay in great detail not just what is perceived, but also what is remembered, and the repeated and constant links between perception and memory. Even those who have not read the novels are aware of the journey of memory on which the narrator goes when he tastes a madeleine dipped in tea; it has become “the Proustian moment”.
More here.