You see, it's fate, not the horses, that moves the wheels of the carts.
3 seconds sound clip from the Duel of the Titans (Romulus and Remus) movie soundboard.
You can hear this line at 00:55:36.720 in the Blu-ray version of the movie.
Quote context
[...]
- Akronon, Sulpicius and some of the others ask permission to light their fires.
- No, not now. We'll wait till Romulus gets back. Then we march.
- Is it true that your father is chasing the caravan?
- Yes, and I'm afraid. He'd have mercy for no one if he should overtake us.
- Why don't you go to him? Why don't you run away?
- Maybe you could make him understand.
- You see, it's fate, not the horses, that moves the wheels of the carts.
(Two horses galloping through the forest)
- What have you found, soldier?
- These tracks were made by the caravan, my king. No doubt about it.
[...]