Samuel Langhorne Clemens (November 30, 1835 – April 21, 1910), better known by his pen name Mark Twain, was an American writer, humorist, entrepreneur, publisher, and lecturer. Among his novels are The Adventures of Tom Sawyer (1875) and its sequel, the Adventures of Huckleberry Finn (1885), the latter often called "The Great American Novel".Read about Mark Twain in Wikipedia
It is not like studying German, where you mull along, in a groping, uncertain way, for thirty years; and at last, just as you think you've got it, they spring the subjunctive on you, and there you are. No- and I see now plainly enough, that the great pity about the German language is, that you can't fall off it and hurt yourself. There is nothing like that feature to make you attend strictly to business.
an Autobiography is the truest of all books; for while it inevitably consists mainly of extinctions of the truth, shirkings of the truth, partial revealments of the truth, with hardly an instance of plain straight truth, the remorseless truth is there, between the lines, where the author-cat is raking dust upon it which hides from the disinterested spectator neither it nor its smell. . . the result being that the reader knows the author in spite of his wily diligences.