Turtles All the Way Down

Turtle from previous WIP!

After a lecture on cosmology and the structure of the solar system, William James was accosted by a little old lady.
"Your theory that the sun is the centre of the solar system, and the earth is a ball which rotates around it has a very convincing ring to it, Mr. James, but it's wrong. I've got a better theory," said the little old lady.
"And what is that, madam?" Inquired James politely.
"That we live on a crust of earth which is on the back of a giant turtle,"
Not wishing to demolish this absurd little theory by bringing to bear the masses of scientific evidence he had at his command, James decided to gently dissuade his opponent by making her see some of the inadequacies of her position.
"If your theory is correct, madam," he asked, "what does this turtle stand on?"
"You're a very clever man, Mr. James, and that's a very good question," replied the little old lady, "but I have an answer to it. And it is this: The first turtle stands on the back of a second, far larger, turtle, who stands directly under him."
"But what does this second turtle stand on?" persisted James patiently.
To this the little old lady crowed triumphantly. "It's no use, Mr. James – it's turtles all the way down."

—J. R. Ross, Constraints on Variables in Syntax 1967

The phrase 'turtles all the way down' seems to have originated in the form 'rocks all the way down', for which a similar story to the one above was printed in an unsigned anecdote about a schoolboy and an old woman living in the woods. (Unwritten Philosophy, 1838)

          In my school-boy days, when I loved better to rob birds'-nests and plunder orchards than acquire knowledge, I have often deserted the school-room and pursued the above-mentioned avocations in the forest, in my usual quiet manner. I recollect once, when having been lost in the intricacies of the wood, I stumbled upon a little hut. Being extremely thirsty, and rightly concluding that a spring would be found in its vicinity, I wended my way thither. I found it occupied by an old woman, of whom I requested a draught of water. It was soon furnished; and when I had despatched it, I was overwhelmed with questions.
          "Ar'n't you one of the 'cademy boys?" inquired she.
          "Yes, marm," was the reply.
          "Well, I declare!" ejaculated the old woman; "they say you learn queer things down there. Why, they say the world is round!"
          "The world, marm," said I, anxious to display my acquired knowledge, "is not exactly round, but resembles in shape a flattened orange; and it turns on its axis once in twenty-four hours."
          "Well, I don't know anything about its axes," replied she, "but I know it don't turn round, for if it did we'd be all tumbled off; and as to its being round, any one can see it's a square piece of ground, standing on a rock!"
          "Standing on a rock! but upon what does that stand?"
          "Why, on another, to be sure!"
          "But what supports the last?"
          "Lud! child, how stupid you are! There's rocks all the way down!"

The concept of the earth resting on turtles may have come from Hindu mythology, where the World Serpent, Shesha, is said to hold all the planets of the universe on his multitude of heads. The idea of several World Elephants holding up the Earth, they in turn standing on the back of a large turtle, may have come from confusion over the Sanskrit noun Nāga, which has the dual meaning of "serpent" and "elephant" (named for its snake-like trunk).

According to Bertrand Russell: "It is exactly of the same nature as the Hindu's view, that the world rested upon an elephant and the elephant rested upon a tortoise; and when they said, 'How about the tortoise?' the Indian said, 'Suppose we change the subject.'"