PART III.--LETTERS WRITTEN AFTER HIS RETURN TO THE UNITED STATES TO

THE TIME OF HIS DEATH.--To the great majority of readers, this will be found to be much the most interesting division of the work, ranging, as it does, over the whole field of Literature, Philosophy, Science, Religion, Morals, History, and Politics, and embodying the mature views of the Author upon nearly all the great Constitutional questions which have arisen under our Government, and many of the most important problems which have agitated the world.