Gold-Eye's Change Vision suddenly gripped him, showing him a picture of the unpleasantly close future, the soon-to-be-now. Doors slid open at each en… - Garth Nix

Wake me when what terrible thing is going to happen, happens, or if it appears I might get wet.

I don't believe authors need to keep any specific values or ideas in mind while they are writing for children, but I do think authors need to be aware of their audience, and of the effect their work may have. So if they want to address particularly sensitive topics or taboos, they have to do so consciously and carefully. This is very different to toeing a particular moral line or leaving things out. Certainly I don't think good always has to triumph over evil; it depends on the story and the aims of the book. For example, I could envisage telling a story where the inaction of people leads to the triumph of evil. But I would include the hope that this would lead to the people involved doing better next time. Is that story then really about the triumph of evil, or is it about the awakening of opposition to evil?

"Do you promise you won't hurt me?" asked Arthur. "You will be safe from all harm for the space of a quarter hour, as measured by this clock," replied the Old One. "You are mortal enough that I would not slay you like a wandering cockroach, or a Denizen of the House." "Thanks," said Arthur. "I think."