Cobwebs from an Empty Skull

A snake who had lain torpid all winter in his hole took advantage of the first warm day to limber up for the spring campaign.  Having tied himself into an intricate knot, he was so overcome by the warmth of his own body that he fell asleep, and did not wake until nightfall.  In the darkness he was unable to find his head or his tail, and so could not disentangle and slide into his hole.  Per consequence, he froze to death.

Many a subtle philosopher has failed to solve himself, owing to his inability to discern his beginning and his end.