INDIVIDUAL LIBERTY
The most important of these is the instinct of conventionality, which exists in all gregarious animals and often leads them to put to death any markedly peculiar member of the herd.
The next most important is the feeling of insecurity aroused by doubt as to the beliefs by which we are in the habit of regulating our lives. Whoever has tried to explain the philosophy of Berkeley to a plain man will have seen in its unadulterated form the anger aroused by this feeling. What the plain man derives from Berkeley's philosophy at a first hearing is an uncomfortable suspicion that nothing is solid, so that it is rash to sit on a chair or to expect the floor to sustain us. Because this suspicion is uncomfortable, it is irritating, except to those who regard the whole argument as merely nonsense. And in a more or less analogous way any ques-
118
