G. Griffin Lewis, The Practical Book of Oriental Rugs
“ The value of an Oriental rug cannot be gauged by measurement any more than can that of a fine painting; it depends upon the number of knots to the square inch, the fineness of the material, the richness and stability of its colors, the amount of detail in design, its durability and, last but not least, its age. None of these qualifications being at sight apparent to the novice, he is unable to make a fair comparison of prices, as frequently rugs which appear to him to be quite alike and equally valuable may be far apart in actual worth. ”
