Being the chief villain of the Second and Third Ages, Sauron sparks numerous questions concerning his motives. How did he become the evil figure we know him to be? Why did he run the risk of transferring a great amount of his inherent power into the One Ring knowing that it could lead to his destruction? Let us look at his downfall and motives through Tolkien’s own stories and letters.
…Barad-dûr, the Dark Tower, which suffered no rival,
and laughed at flattery, biding its time,
secure in its pride and its immeasurable strength.
(Two Towers, p. 192)
Just like Angband in the First Age became the citadel of Morgoth — the embodiment of evil and the Dark Lord’s tyranny in Middle-earth, so did Barad-dûr rise to fill its place in the Second and Third Ages as the fortress of Sauron. In many ways the Dark Tower of Mordor, built by once Morgoth’s most trusted lieutenant, became the descendant of Angband, sharing traits with it, but also being the reflection of Sauron’s own power, character, ambitions and evil. Read more
Middle-earth Reflections 