O just ones, hear me! You cannot condemn this man, monkey or parrot for saying that the moon is the world he comes from. If he is a man, all men are free. Is he then not free to imagine what he wants, even if he does not come from the moon? Can you force him to have only your visions? Impossible! You may make him say that he believes that the moon is not a world, but still he will not believe it. To believe something, one must imagine that it is more probable than not. Unless you show him what is probable or he realizes it himself, he may tell you that he believes and yet he will not believe.
Sun-being to the court - The Other World (1657)