It would be wrong of me to suppose that just because I can form private mental images, that everyone can. As Francis Galton and William James long ago showed, a small proportion of adults-and some of these extremely intelligent-are unable to form such visual images. Berkeley's point is that it would be equally arrogant for these non-thinkers or non-image formers to claim that everyone is like them in the relevant respect. The temptation to pontificate in that way reveals a narrowness and unwillingness to see the world from another perspective.
David BermanLanguage is virtually always pathological; hence the solution is to move as fast and far as possible from language to experience, from linguistic to experimental or psychological philosophy. In order to know that we are not in the linguistic maze, we need to determine, according to Berkeley, whether the things we are talking about exist; hence we need to look for the relevant perceptions. For him, this usually means retiring into himself and trying to imagine whether x exists, having formed the best definition possible of x.
David BermanThere is a person whose acquaintance and conversation I do earnestly recommend unto you as thing of the greatest advantage: you will be surprised when I tell you it is yourself.
David BermanWhen there's trouble I don't like running, but I'm afraid I got more in common with who I was, than who I am becoming
David BermanFor Berkeley (normal) vision is a language whereby God tells us about the tangible world. But prior to having experience of the tangible world, the visual language would be as meaningless as an utterly alien language. It would convey no meaning to the sighted mind.
David Berman