Hayden Carruth wrote of the way that "Roquentin has become a familiar of our world, one of those men who, like Hamlet or Julien Sorel, live outside the pages of the books in which they assumed their characters ... It is scarcely possible to read seriously in contemporary literature, philosophy, or psychology without encountering references to Roquentin's confrontation with the chestnut tree, for example, which is one of the sharpest pictures ever drawn of self-doubt and metaphysical anguish. ... Certainly, "Nausea" gives us a few of the clearest and hence most useful images of man in our time that we possess; and this, as Allen Tate has said, is the supreme function of art."