" What you're saying is that there's no point worrying about the past, because we can't change it?"

"Basically," she nodded, then leant over, one green eye shining brightly, one brown eye gleaming dully. "A mortal can drive himself mad thinking about the nature of the universal puzzle. Concern yourself only with the problems of the present and you will get along fine. "

― Darren Shan , The Lake of Souls (Cirque du Freak #10)