"I have learned, Severus," said Albus grimly, "never to assume." Because when you made assumptions, it would always come back to bite you. And then more people died, and Albus had too much blood on his hands already. "By all appearances Harry Potter and Voldemort killed one another that day in Godric's Hollow, thus fulfilling the prophecy - but it bothers me, perhaps more than it should, that it seemed so easy."