Wittgenstein replied, "Well, what would it have looked like if it had looked as though the Earth was rotating?"  Science has taught us, against all intuition, that apparently solid things, like crystals and rocks, are really almost entirely composed of empty space.
Wittgenstein répondit, "Mais à quoi cela aurait-il ressemblé si on eût dit que la Terre tournait ?"  La science nous a appris, contre toute intuition, que des objets en apparence solides, tels les cristaux ou les pierres, sont en fait composés presque entièrement de vide.