To the author it has always been a necessity, on studying a book, to imagine the author of the book alive before him.He therefore obtained a picture of him and strove to learn enough of the course of his life to be able to judge the course of his development. The author assumes a like necessity with many of his readers; he has therefore, in this first volume, included his picture1 and in the following offers the reader a brief survey of the course of his development.