The picture is a tool to preserve our memories. Because memories are what Mimi! What happens if one day we lose it, pictures, memories, makes us think of those memories.
Image was instrumental in keeping the memory of us. Because the querent had the necessary things are in life. If one day we lose those memories to remind us of the images will have those memories.
The picture is a tool to keep the memory of us. Because of inherent memory is what is best in life. If one day we lost his memory of that picture will help remind us of those memories anew.