Citizen Kane
Every cinematic technique you see now has either been introduced or perfected by citizen Kane.
I don't know who said this quote but they are absolutely right. You may feel bored at times but from a technical perspective this movie was light years ahead of its time.
The cinematography and greg toland's use of deep focus and strong lighting made every composition something new.
The way Orson welles told the story of a complicated man through groundbreaking techniques will keep you feel intrigued.
For each character kane meant different things but at his core he was a man longing for love but on his terms. This was the motivation behind his relationship with every character in the movie.
Mr kane was a man who got everything he wanted and lost it,maybe rosebud was something he couldn't get or lost. Anyway it wouldn't have explained anything. I don't think any one word could explain a man's life. Now I guess rosebud is just a piece of jigsaw puzzle,a missing piece
This scene and also the film says that things don't mean happiness. We could see in the film kane was collecting so many paintings and statues,but he wasn't happy. He might have everything but at the end he realised that he was truly happy only in his childhood,when he was young and innocent and his parents were taking care of him. Rosebud also meant what his life was and what it will never be again. He collected all that art but the one thing that was the most closest to him and the thing which mattered to him the most got lost.