Your brain is the orchestra that plays the symphony of your mental experience and your awareness, and that experience is your window on existence and on the universe. Our aim is to preserve, restore, and even improve your mental experience beyond the limits of biology. With dedication, scientific advances within our lifetimes may allow us to record the unique arrangement and responses of neurons and synapses that encode your memories, their active behavior, and ultimately to restore all of that in a neural prosthesis that seamlessly repairs a brain function, or a complete artificial brain. Some of this is still reminiscent of science fiction, but each challenge is well on its way to being a tractable technology problem supported by scientific evidence and understanding.