To this important training Franklin added a conscious attempt to develop his own powers. Printing and the love of books led the horse to water, but his desire for self-expression made him drink. Of this he tells in an early passage of the "Autobiography." His daily work had taught him to spell and punctuate correctly, but he was faulty in choice of words and in "perspicuity," or clearness of construction. So he took Addison's _Spectator_ as his model, put paragraphs into his own words, then tried to set them back into the original form, compared the two products, and made up his mind wherein Addison's versions were better than his and wherein, as he sometimes thought, his were better than his teacher's. He also followed up the art of discussion both in speech and in writing, making it always a point to convince his opponents without antagonizing them. These things he did, not in order to become a professional writer but solely in order to utter or write his ideas to the best effect. "It has ever since," he says, "been a pleasure to me to see good workmen handle their tools; and it has been useful to me, having learned so much by it as to be able to do little jobs myself." Prose writing was simply a tool for him--the most useful one that he ever mastered and, as he says elsewhere, the principal means of his advancement. As long as he was a printer (until he was forty-two years old) he employed his prose composition in writing copy which was clear and interesting and therefore salable--chiefly in the _Pennsylvania Gazette_ and in _Poor Richard's Almanac_; but during and after that time he put his powers to even greater use as a speaker and as a writer of articles and pamphlets on affairs of public interest. He was almost always simple, definite, and practical, for he wrote to the mass of people with little education. He realized that if he was to bring his points home to them he must not write "over their heads," and that he must appeal to their common sense and their self-interest; and he was invariably good-humored, for he knew that good humor makes more friends than enemies.