consciousness

"I think I have an answer for your riddle: consciousness. You can't lose it, you can only stop existing." You replied.

Stardust looks at you disappointed. "Oh dear, I expected you to get a bit further, beings loose consciousness all the time it is called Unconcerned. A knight who can't solve one simple riddle is not worthy of a princess and the penalty for losing the first riddle is ****. Sorry" She says as she bites of your head.