Mark Twain (1835-1910), American humorist and novelist, captured a world audience with stories of boyhood adventure and with commentary on man's shortcomings that is humorous even while it probes, often bitterly, the roots of human behavior.

Bred among American traditions of frontier journalism, and influenced by such cracker-box humorists as Artemus Ward and by the tradition of the tall tale, Mark Twain scored his first successes as a writer and lecturer with his straight-faced, laconic recitation of incredible comic incidents in simple, direct, colloquial language. His was an oral style, and his principal contribution is sometimes thought to be the creation of a genuinely native idiom.

Some contemporaries considered Mark Twain's language uncouth and crude when compared with the well-mannered prose of William Dean Howells or the intricately contrived expression of Henry James. Though conventionally less disciplined and less consistently successful than either, Mark Twain surpassed both in...