“What are the conditions under which this kind of reading—reading for understanding—takes place? There are two. First, there is initial inequality in understanding. The writer must be “superior” to the reader in understanding, and his book must convey in readable form the insights he possesses and his potential readers lack. Second, the reader must be able to overcome this inequality in some degree, seldom perhaps fully, but always approaching equality with the writer. To the extent that equality is approached, clarity of communication is achieved.”