The reader must come armed

It is no accident that the Age of Reason was coexistent with the growth of a print culture, first in Europe and then in America.

In the eighteenth and nineteenth centuries, print put forward a definition of intelligence that gave priority to the objective, rational use of the mind and at the same time encouraged forms of public discourse with serious, logically ordered content.

A written sentence calls upon its author to say something, upon its reader to know the import of what is said. And when an author and reader are struggling with semantic meaning, they are engaged in the most serious challenge to the intellect.

This is especially the case with the act of reading, for authors are not always trustworthy. They lie, they become confused, they over-generalize, they abuse logic and, sometimes, common sense.

The reader must come armed, in a serious state of intellectual readiness. This is not easy because [the reader] comes to the text alone. In reading, one's responses are isolated, one's intellect thrown back on its own resources. To be confronted by the cold abstractions of printed sentences is to look upon language bare, without the assistance of either beauty or community. Thus, reading is by its nature a serious business. It is also, of course, an essentially rational activity.
Neil Postman, in Amusing Ourselves to Death: Public Discourse In the Age of Show Business chapter 4, The Typographic Mind, pages 50-51. With apologies to Mr. Postman I've re-ordered and condensed the text (skipping a few paragraphs) for brevity/clarity.