The Inca believed in reincarnation. Those who obeyed the Incan moral code-ama suwa, ama llulla, ama quella (do not steal, do not lie, do not be lazy)-"went to live in the Sun's warmth while others spent their eternal days in the cold earth". The Inca also practiced cranial deformation. They achieved this by wrapping tight cloth straps around the heads of newborns in order to alter the shape of their soft skulls into a more conical form; this cranial deformation was made to distinguish social classes of the communities, with only the nobility having cranial deformation.