If you're one of the many interested in the lost continent of Atlantis then these two dialogues are definite `must reads' for you. Plato's dialogue of the Timaeus introduces Atlantis and the Critias expands and develops the earlier ideas presented. These two dialogues are THE basis for the Atlantis myth. All of the money spent on explorations through the ages to find `the lost city of Atlantis' could have been spent more wisely. Atlantis is Plato's creation. There is no mention of such a place before he wrote these works and every piece dealing with the subject since is based upon them. Enjoy.