What does Orwell's description of Oceanian society imply about his view of humanity?

Orwell's dark descriptions of the Oceanian society show that he had little faith in the human race and believed that it was only a matter of time (with all of the technological advances) untill greed and corruption took over.  It also implies that people are willing to accept small changes against their lives by the government in exchange for protection (but it looks like it got out of control.)  For being a great writer, he seems rather dense and simple minded.  His fictional predictions are right to certin extents, but only with about 30 additional years of development.