“There's a palace in your head, boy. Learn to live in it always.”

“Sometimes... sometimes I think the Asylum is a head. We're inside a huge head that dreams us all into being. Perhaps it's your head, Batman. Arkham is a looking glass... and we are you.”

“I’m a false icon! The media collaborate in promoting my superficial lifestyle as somehow more valid, more worthy of attention than your real lives! - Gideon Stargrave”

“Your head's like mine, like all our heads; big enough to contain every god and devil there ever was. Big enough to hold the weight of oceans and the turning stars. Whole universes fit in there! But what do we choose to keep in this miraculous cabinet? Little broken things, sad trinkets that we play with over and over. The world turns our key and we play the same little tune again and again and we think that tune's all we are.”

“Superhero science has taught me this: Entire universes fit comfortably inside our skulls. Not just one or two but endless universes can be packed into that dark, wet, and bony hollow without breaking it open from the inside. The space in our heads will stretch to accommodate them all. The real doorway to the fifth dimension was always right here. Inside. That infinite interior space contains all the divine, the alien, and the unworldly we’ll ever need.”

“We're the new power, come to replace the old. Cameras in the head, children with microchips, spin doctors rewriting reality as it happens. ”

“[He]... watches the Joker rising from his wheelchair, the way a rabbit watches car headlights bearing down, unable to move a single, spotlit muscle. The madman's limbs appear to unlatch as though some psychotic god has chosen to give life to a complicated Swiss Army knife. The Joker's head rotates... the green lasers of his eyes target the keys at the big man's belt, and he shakes his head.”