"Never trust anything that can think for itself if あなた can't see where it keeps its brain."

If this is from "Holes", I don't approve. "Holes" was quite suckish.

unless it gives あなた cookies!!!!!

Can あなた see for yourself where あなた keep your brain???
Is it tangible?Are あなた saying don't trust humans??

That's a wee bit cynical, don't あなた think?

~Arthur Weasley