“You know what’s the most dangerous thing about schizophrenia? The most dangerous thing is believing you don’t have it. That’s the trick — the mind killer. Your disease convinces you that you don’t have it. So for example, one day in the hospital, you meet a girl and she has some friends and they tell you you’re not sick, you have superpowers, and more than anything you want to believe it because that means you’re not crazy. That means you can fall in love and live happily ever after. But you know if you believe it, if you surrender to the hope and you’re wrong, then you’re never coming back.”
– David Haller (Dan Stevens) worries about believing his powers truly exist.