- Dr. Thomas Morgan: ...because we all stand between the jungle and the stars, at a crossroads. I think we better discover what brings out the best in humankind, and what brings out the worst, because it's the stars or the jungle.
- Dr. William Barton: We are changing a sea creature into a land creature.
- Dr. Thomas Morgan: We only use what nature offered. The lungs were there, we didn't make them.
- Dr. William Barton: You'll see Dr. Morgan.
- Dr. Thomas Morgan: Just don't move too fast trying to change him.
- Dr. William Barton: Are you afraid of unknown things?
- Dr. Thomas Morgan: I'm only afraid of misusing what I do know.
- Marcia Barton: [shoots a rifle at the water 6 times, to the crew who come running] Shark. Got two of them.
- [first lines]
- Dr. Thomas Morgan: Mrs. Barton?
- Marcia Barton: Why, yes. You're the guide, Mr. Grant?
- Dr. Thomas Morgan: No, he's Grant.
- Jed Grant: Hi.
- Dr. Thomas Morgan: I'm Tom Morgan.