The book that spawned the adage uttered all over the world: I think I can, I think I can. Watty Pipers Little Engine has taught the important lesson of perseverance to children everywhere for upwards of 85 years. Not only that, the tale stresses the importance of optimism, a trait that can propel you through even the roughest moments. In this way, The Little Engine That Could serves as both a source of entertainment and guidance. This classic has well cemented its place as one of the most revered and beloved pieces of childrens literature.