Aesop was an ancient Greek fabulist of yore, known for his collection of fables that have been passed down through the ages. He is credited with writing hundreds of stories, many of which feature animals as characters and teach moral lessons. His most famous works include 'The Fox and the Grapes, ' 'The Tortoise and the Hare, ' and 'The Ant and the Grasshopper.' AESOP's fables remain popular today, and are still used to teach children about morality and life lessons.