Nostalgia. This is a type of sentimental longing for what was in the past. Nostalgia is not always a positive word, due to men who fought in some wars were told to never speak of home or homeland. It caused so much depression that they would die.
Explanation:
He is referencing a land that is no longer there or is lost. We (the author) look back on when we were young and things were different, especially how they are different now that he cannot get back to what was special to him. It is like waking from a dream...and realizing that you can never have it back the way it was.
