"The philosopher's stone,professor," she started speaking,raising her hand first, "would be sort of like the invisibility cloak in the story,wouldn't it?" Or at least that's how she saw it. "To start off,it was,or is,something created by Nicholas Flamel and when used in the Elixer of Life,it allows a person to....well live. What makes it like the cloak,is that once you stop drinking the elixer,or using the stone, in time death will over come you. Without the cloak death can find you and it's basically the same for the stone too. Stop using it and sooner or later that's it." The words were out and she was happy with her answer. This was one class she was very happy with despite the whole "go to your corners" thing.