- Herbert Higgins: Oh, Rob! I stuck by you when you were poor. You don't think I'm gonna desert you, now you're rich.
- [last lines]
- Julie Herrick: From what Father said, his mind was, well, warped.
- Sir Frederick Travers: It must have been. Warped by imaginary wrongs. A man fighting shadows. He's to be pitied, really. He probed too deeply in forbidden places. What a man earns, he gets. Nature has a strange way of paying him back in his own coin.
- Herbert Higgins: Have you been scalded or have you got the mange?
- Robert Griffin: Neither. I'm invisible.
- Herbert Higgins: You - Oh, don't make me laugh! Next thing you'll be telling me you curl up and sleep in a buttercup.
- Robert Griffin: Is there any danger of my turning visible again?
- Dr. Peter Drury: Not 'til you're dead.