Spend regularly and constantly two or three hours of the morning in study and retirement. I do not take upon me to prescribe what you shall employ yourself about. I only propose the passing two or three hours of the twenty-four in private.

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.

Somewhere in the future I am remembering today.

Language 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.

I am about to learn what it's like to live here.

For 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.

Suppose one who had always continued blind be told by his guide that after he has advanced so many steps he shall come to the brink of a precipice, or be stopped by a wall; must not this to him seem very admirable and surprising? He cannot conceive how it is possible for mortals to frame such predictions as these, which to him would seem as strange and unaccountable as prophesy doth to others. Even they who are blessed with the visive faculty may (though familiarity make it less observed) find therein sufficient cause of admiration.