David

“Listen ... The universe is full of creatures that can get inside your soul. Things that try to take away the very things that make you who you are, who try to reshape you for their own ends, who want to eat you like a piece of fruit and spit out the seeds. It's Turtles all the way down. Are you listening? ... Listen, Chris. The Turtles don't deserve your life. You mustn't let them have you. I know them too well, Chris. They've touched me, infected me, possessed me. I've felt their contamination. I've been on their altars. Listen to me, Chris. They don't have the right ... Not even if they love you ... Not even if they're a god.”
― Kate Orman, Doctor Who: Sleepy