EXTRA SUBJECT READING: Sophie's world; We have an idea of the perfect object because of our souls has a memory of it from the world of the forms 'the perfect good', which are eternal and changeless.. We see a horse missing a leg and we know that it is an instance of the perfect horse (which is the biggest, fastest, handsomest). It's like a Cookie cutter that lives in the world of the forms. Sometimes cookies made from this cutter can change shape, crumble, break apart, but there is a permanent perfect cookie from the cookie cutter. Its like Object Orientated Programming,