Peut-être je me trompe mais c'est toujours quelque chose que j'ai considéré comme allant de soi.... et voila que vous insinuer le doute dans ma vieille caboche...
Pourtant après réflexion, je persiste et signe... Sauron présente toutes les caractéristiques d'un maiar du feu (au départ un esprit proche d'Aulë puis perverti par Melkor).
Silmarillion: "For of the Maiar many were drawn to his splendour in the days of his[Melkor] greatness, and remained in that allegiance down into his darkness; and others he corrupted afterwards to his service with lies and treacherous gifts. Dreadful among these spirits were the Valaraukar, the scourges of fire that in Middle-earth were called the Balrogs, demons of terror.
Among those of his servants that have names the greatest was that spirit whom the Eldar called Sauron, or Gorthaur the Cruel. In his beginning he was of the Maiar of Aulë, and he remained mighty in the lore of that people"
Silmo
PS; Isengar, mon ami, autant que possible, je ne m'égare que sur les chemins de Faërie, et non sur ceux creusés par ces maudits Balrogs.. :-)