- Professor Donald Blake: Unless we learn to control the instincts we/ve inherited from our ape-like ancestors, the race is doomed.
- Madeline Howard: Why don't you learn to control your instincts and stop being so pessimistic?
- Professor Donald Blake: You know, you're right, and when I look at you, the future's very bright.
- Sylvia Lockwood: [Seeing a giant dragonfly at the window, she screams]
- Professor Donald Blake: Don't open the door! It'll escape!
- Sylvia Lockwood: Who cares?
- Professor Donald Blake: I care! I want it!
- Jimmy Flanders: Well, what is it?
- Professor Donald Blake: I don't know! We'll find out when we catch it!
- Professor Donald Blake: Jimmy, did you know your dog is a throwback?
- Jimmy Flanders: Throwback? He's a German Shepherd.