One of the major themes of a number of H.G. Wells' works is that of the way that science can be worshipped like any other god and in many ways this worship can come at a great cost. His portrait of Griffin who at first is thrilled by his discovery and seeks to find its limits and how to manage his invisibility is not always totally convincing but it serves to highlight these conflicts between the drive for discovery and advancement and the loss of humanity or concern for humanity that Wells believed could follow an unfettered drive for scientific advancement.
So as Griffin continues to separate himself from humanity, this theme of Wells' work becomes more and more evident. Griffin begins to look on all other humans with disdain, disgusted by their weakness and by the great power he has found by gaining control over invisibility. Eventually brought to heel by his confidante Dr. Kemp, Griffin is stopped and killed. But Wells's message comes through quite clearly in the story.