Those incantations can't hurt me. I have some incantations of my own. How about, 'A body in motion tends to stay in motion'?

— Peter Dickinson (John Ritter)

9 seconds sound clip from the The Flight of Dragons movie soundboard.

You can hear this line at 01:28:29.825 in the Blu-ray version of the movie.

Quote context

[...]

- And that's the answer to why Antiquity chose me.

- You are magic, mere illusion. I am science, logic, and the truth.

- You don't frighting me. Nothing so horrible could be real. I deny you!

- Deny me and you deny all magic. Say it then!

- I deny all magic!

- Deny this... Kimpacto... solauu... insomaa. Eran... courant... palay. Ocaun... eeoan.

- Those incantations can't hurt me. I have some incantations of my own. How about, 'A body in motion tends to stay in motion'?

- Protons have 1832 times the mass of electrons.

- All light is bent or refracted as it goes from one medium to another, save in a direction perpendicular to the interface between the two mediums.

- New species may result from the selective action of external conditions upon the variations from their specific type which individuals present

- Gravity varies as to the inverse square of the distance.

[...]