If a witch needs something, another witch will give it to her. If there is war to be fought, we don't consider cost one of the factors in deciding whether or not it is right to fight. Nor do we have any notion of honor. An insult to a bear is a deadly thing. To us...inconceivable. How could you insult a witch? What would it matter if you did?
Philip PullmanBut think of Adam and Eve like an imaginary number, like the square root of minus one: you can never see any concrete proof that it exists, but if you include it in your equations, you can calculate all manner of things that couldn't be imagined without it.
Philip Pullman