When I look into your eyes, I see the light of day. When I behold your ears, I hear the sound of thunder. Your nose and mouth tell me of the atmosphere. Your lungs record the history of a previous life in salt and sea. Your limbs betray the secrets of gravity, your brain of electrochemistry. Every living thing reflects the shape of its environment. When we look into a mirror, we discover reality, ourselves, a prehistoric legacy of co-evolution.