“Evolution is a blind giant who rolls a snowball down a hill. The ball is made of flakes—circumstances. They contribute to the mass without knowing it. They adhere without intention, and without foreseeing what is to result. When they see the result they marvel at the monster ball and wonder how the contriving of it came to be originally thought out and planned. Whereas there was no such planning, there was only a law: the ball once started, all the circumstances that happened to lie in its path would help to build it, in spite of themselves.”

American writer, humorist, and essayist

Mark Twain was the pen name of Samuel Langhorne Clemens, an American writer, humorist, and essayist. He is best known for the novels The Adventures of Tom Sawyer and Adventures of Huckleberry Finn, and for a body of work that helped define American writing in the late 19th century. His books also include A Connecticut Yankee in King Arthur's Court and Pudd'nhead Wilson. He co-wrote The Gilded Age: A Tale of Today with Charles Dudley Warner. Twain's work is marked by wit, social satire, and a sharp eye for American life.