Fast drivers can see no further than slow drivers, but they must look further down the road to time their reactions safely. Similarly, people with great projects afoot habitually look further and more clearly into the future than people who are mired in day-to-day concerns.
'I see nobody on the road,' said Alice. 'I only wish I had such eyes,' the King remarked in a fretful tone. 'To be able to see Nobody! And at that distance, too! Why, it's as much as I can do to see real people, by this light!'
Lewis Carroll (1832 - 1898)
Source: Through the Looking Glass and What Alice Found There, Pages: Chapter 7
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.
Source: Berkeley: The Great Philosophers (The Great Philosophers Series) (Great Philosophers (Routledge (Firm))), Pages: 29
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.
Source: Berkeley: The Great Philosophers (The Great Philosophers Series) (Great Philosophers (Routledge (Firm))), Pages: 33..34