Lincoln's letters have been cited in countless biographical and critical works yet have received little scholarly attention as a whole. This comprehensive study reveals his letters as fundamental to understanding his development as a writer. Early on, he employed Hugh Blair's popular idea of developing "taste" in written documents, and carefully studied the letters of his contemporaries. He wrote more than 5000 of his own. As he became more proficient, he employed more sophisticated rhetorical strategies to deal with political opponents, imperious generals and critics of his policies.