The Fear (capitalized throughout the narrative) is defined by the narrator, by Wil, and the other members of the group of seven, as the fear and resistance to change that manifests when individuals on the physical plane find themselves too comfortable in their present existences to embrace the change offered and promised by the Insights. It's important to note that throughout the narrative, the Fear is repeatedly referred to as at the core of any entrenched thought that restricts freedom of thought, communication and feeling in the name of retaining and/or expanding power and/or control. In other words, it's present (according to the narrative) in both conservativism and liberalism.