There 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.

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.

For it oft happens that a notion, when it is cloathed with words, seems tedious and operose and hard to be conceived, which yet being striped of that garniture, the ideas shrink into a narrow compass, and are viewed almost by one glance of thought.

We visual communicators have so much good to share: rather than sharing our chemical and style addictions, we could be using our professional skills to help communicate health information, conflict resolution, democracy, technology.

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.

Unless we take care to clear the first principles of knowledge from the incumbrance and delusion of words, we may make infinite reasonings upon them to no purpose. We may deduce consequences, and never be the wiser.

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.