"I have led a toothless life, he thought.  A toothless life, I have never bitten into anything.  I was waiting.  I was reserving myself for later on - and I have just noticed that my teeth have gone. What's to be done? Break the shell?  That's easily said.  Besides, what would remain?  A little viscous bit of rubber, oozing through the dust and leaving a glistening trail behind it."