“(About Da Vinci’s Demons) A large thrust of the show is this dichotomy between science, as represented by Leonardo to begin with, and the mysticism as represented by the Turk, and I think in the course of this series, there’s a constant tug of war between what is real and what is unreal, what is mythological and what is true and false, religion and science, and I think it becomes ever more clotted and entwined.”