" We think differently from all other creatures on earth, and we can share these thoughts with one another in ways that no other species even approaches . . . We alone brood over what didn't happen, and spend a large part of each day musing about the way things could have been if events had turned out differently. And we alone ponder what it would be like not to be. . . No other species on earth seems to be able to follow us into this miraculous place." Terrance Deacon ( What wonderfully amazing creatures we are !)