manner that the various objects represented in it appear 
     to have the same sizes, shapes, and positions, relatively  
     to each other , that the actual objects as located in 
     actual space would have if seen by the beholder from a 
     single determined point of view. I have discovered nothing 
     to justify the belief that the Greeks had any idea, either in 
     practice or theory, at any time, of the conception 
     contained in the italicized words in the preceding 
     sentence.

     The study of the Bible in the Middle Ages achieved 
conflicting patterns of expression which the economic and 
social historian is also familiar with. The conflict was between 
those who said that the sacred text was a complex unified at 
the literal level, and those who felt that the levels of meaning 
should be taken one at a time in a specialist spirit. This conflict