Mark Twain was an American writer, journalist and social activist. His work covers a variety of genres – humor, satire, philosophical fiction, journalism and others, and in all these genres, he has consistently taken the position of humanist and democrat. “Fly” is a unique work of thinking and reasoning which rises up the very strange question - “If you were God, would you take a chance to create the fly”? This question may put into pause every human being but taking into consideration the fact that flies exist, so probably they were created for someone or something. This philosophic work by Mark Twain will definitely make you think of that unthinkable issue. Reading this book, you will be able to imagine yourself or someone else in the role of a great creator willing to invent the fly, a creature who had never done any harm or use. Read it and make your own mind.