The Chinese have a proverb to the effect that language is used to conceal intentions. Notwithstanding their traditional frankness, Americans have written letters designed to mislead the reader. Certainly no series of letters, whether from clergymen, politicians, or businessmen can be taken uniformly at face value. But how may statements be discounted or interpreted in such a way that one may draw the correct meaning from them?
Usually the letters of one man are used in connection with the preparation of a biography of their author or the detailed analysis of a series of his actions. In either case cumulative knowledge of the writer's idiosyncrasies, continuing motivation, and, most of all, his actions themselves provide clues to acceptable interpretations. But when one reads the letters of a large group of men engaged over the course of many years in a common occupation, all of these conventional indicators are lacking.