In this highly personal letter to his friend and colleague, John Cairns, John Brown provides supplementary information about his own work and background and his impressions of important cultural and political events of the era. The letter offers a unique historical insight into the early nineteenth century, and provides readers with a glimpse into the life of one of Scotland's most important religious figures. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.