However, Roquentin's predicament is not simply depression or mental illness, although his experience has pushed him to that point. Sartre presents Roquentin's difficulties as arising from man's inherent existential condition. His seemingly special situation (returning from travel, reclusiveness), which goes beyond the mere indication of his very real depression, is supposed to induce in him (and in the reader) a state that makes one more receptive to noticing an existential situation that everyone experiences, but may not be sensitive enough to let become consciously noticeable. Roquentin undergoes a strange metaphysical experience that estranges him from the world. His problems are not merely a result of personal insanity, which would be deprived of larger significance. Rather, like the characters in the Dostoevsky and Rilke novels, he is a victim of larger ideological, social, and existential forces that have brought him to the brink of insanity. Sartre's point in "Nausea" is to comment on our universal reaction to these common external predicaments.