- Clara: "Emmett, do you think we’ll ever be able to travel to the moon the way we travel across the country on trains?"
- Doc: "Definitely, although not for another 84 years, and not on trains. We’ll have space vehicles, capsules sent aloft on rockets, devices that create giant explosions, explosions so powerful that they…."
- Clara: "...that they break the pull of the Earth’s gravity and send the projectile through outer space. Emmett! I read that book too. You’re quoting Jules Verne, From the Earth to the Moon."
- — Doc and Clara find a common interest
From the Earth to the Moon (in French: De la Terre à la Lune) was a science fiction novel written by Jules Verne in 1865. The novel described space exploration for the first time. It was later combined with the 1870 sequel, Around the Moon, to create A Trip to the Moon and Around It.
Doc Brown, while looking at stars with Clara Clayton through her telescope, told her of a day in 1969 when fantastic machines that would one day propel humans into outer space and to the moon. As he attempted to describe it in 19th century terms, he was surprised when Clara completed his sentence. She recognized his words as a reference to the novel. They then realized that they both loved Jules Verne, and Doc then described his love for Twenty Thousand Leagues Under the Sea.