“To know what would have happened, child?” said Aslan. “No. Nobody is ever told that.”
“Oh dear,” said Lucy.
“But anyone can find out what will happen,” said Aslan. “If you go back to the others now, and wake them up; and tell them you have seen me again; and that you must all get up at once and follow me — what will happen? There is only one way of finding out.”
— C. S. Lewis, Prince Caspian, p. 142-143