"…No sensible person would try to fit four

[shamelessly_mkp]

“…No sensible person would try to fit four elephants on top of a fish. Which leaves turtles. Small turtles spend a lot of time on rocks, but no one in their right mind would expect a small turtle to hold up four giant world-bearing elephants. Big turtles come out onto land to lay their eggs, but that’s a mystical event and it doesn’t cast serious doubt on the theory that a turtle’s natural place is water. Where, please notice, it does not require support. It can swim. So it stands to reason that any self-respecting giant space-faring turtle will swim through space, which implies that it needs no artificial support to avoid falling.”
- Why world turtles make the most sense for planets to rest on, The Science of Discworld, Book IV: Judgment Day.
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