>I don't think this is true. We know that thought and memory are constrained (accessed) at a physical level - at least to some extent. That is, damage to your physical brain can result in diminished or eliminated access to those things.

Sure, the damage changes you. It becomes a new part of your state prior to making a decision.

>You remember, but unless you choose, you are nothing but memory.

Completely agree, but we don't think really know much about the relationship between how we store memories and how we incorporate those into a decision making process. I may be wrong, I don't know much about neuroscience. My take is though that it doesn't matter. All of that is part of our self. Memories, decision making processes, neurochemistry, it's all part of our state and our decisions are only truly 'ours' to the extent that this state determines or influences them.