Mark Twain was the pen name of Samuel Clemens (1835-1910), one of America's greatest and most beloved writers. His most famous novels, The Adventures of Tom Sawyer and Adventures of Huckleberry Finn, capture life along the Mississippi River in the 1800s with humor, adventure, and keen observations about human nature.

Before becoming a writer, Clemens worked as a steamboat pilot on the Mississippi River. He took his pen name from a riverboat term: when sailors measured the water depth and called out “mark twain,” they meant the water was two fathoms (twelve feet) deep, safe for the boat to pass. This background gave him rich material for his stories about river life and small-town America.

Twain became famous for his novels, his sharp wit, and his funny observations about life. He traveled the world giving humorous lectures and wrote essays that made people both laugh and think. His writing style felt natural and conversational, quite different from the formal, flowery writing common in his time. He helped shape American literature by writing about ordinary American life in the voices of ordinary Americans.

Today, when people call someone “the Mark Twain of” something, they mean that person combines humor, wisdom, and excellent storytelling the way Twain did.