What do I mean by the words in quotes?
Let me give you two hints :

Hint 1-Zanarkand was destroyed 1000 years ago.Recently Sin destroyed "Zanarkand".Tidus and Jecht came from "Zanarkand".
Hint 2-Mica and Seymour(the "maesters") are much like Jecht and Tidus.

Sin was summoned at the end of the war, after Zanarkand had already lost. It was a last ditch effort on Yu Yevon's part to have a moral victory, if not a physical one.
THAT´S what you think.But if you can understand the hints you will understand the words in quotes and what I have been saying so hard.