[Inziladun]

Originally Posted by Zigûr

Given how often this is the case, it's interesting that at the highest level the opposite was true, by which I mean the case of Manwë in judgement of Melkor: "For Manwë was free from evil and could not comprehend it, and he knew that in the beginning, in the thought of Ilúvatar, Melkor had been even as he; and he saw not to the depths of Melkor's heart and did not perceive that all love had departed from him for ever." (The Silmarillion p.65-66)

Maybe Manwë's innocence may be attributed to the simple fact that Morgoth was the primordial evil in Arda, the "test case", as it were.

Originally Posted by Zigûr

However, considering that Manwë was "free from evil" does the insight of characters like Melian convey a reduced freedom from evil with a "know thine enemy" connotation? But I suppose another parallel with Galadriel might be useful; she knew evil but rejected it, and perhaps knowing evil was not always a bad thing when it came to fighting evil, as long as it didn't go too far (as in the case of Saruman).

One wonders if Melian had ever been subjected to any sort of temptation along the lines of Galadriel's desire of the Ring. Being truly "embodied" and thus chained to the earth as Morgoth, Sauron, and later, the Istari, I wouldn't think she would have been immune from evil thoughts; merely she apparently possessed enough wisdom and will to spurn them.

Originally Posted by Zigûr

That would seem to fit with Professor Tolkien's recurring theme that evil ultimately contributes to good, that Arda Healed would be greater than Arda Unmarred for having been Marred.

That seems an echo of Frodo's words to Sam just before Frodo's departure from the Grey Havens.

....you will read things out of the Red Book, and keep alive the memory of the age that is gone, so that people will remember the Great Danger, and so love their beloved land all the more.

Those who have personally experienced troubles have more appreciation for what they have than those who have not. On that score, the Exiled Noldor should have been happier and more content in Aman after their return than the Vanyar, who did not endure the pains and turmoils of Middle-earth.