‘Wisdom grows by stripping away beliefs, until the last tether is cut, and suddenly you float free. Only, because your eyes are wide open, you see right away that you can’t float in what you’re in. You can only sink. That’s why the meanest religions work so hard at keeping their followers ignorant. Knowledge is poison. Wisdom is depthless. Staying ignorant keeps you in the shallows. Every Tanno one day takes a final spiritwalk. They cut the last tether, and the soul can’t go back. When that happens, the other Tannos mourn, because they know that the spiritwalker has drowned.’