A man should keep his feet solidly on the ground.
5 seconds sound clip from the Chitty Chitty Bang Bang (1968) movie soundboard.
You can hear this line at 02:22:42 in the Blu-ray version of the movie.
Quote context
[...]
- Now you'll have to marry me.
- Yes, they can. Yes, they can, but you have to be practical, too.
- You have to face the facts. Man has to see things as they really are.
- After all, a man with responsibilities can't walk around with his head in the clouds all the time.
- A man should keep his feet solidly on the ground.
- Bang Bang, Chitty Chitty Bang Bang, our fine four-fendered friend. (9)
- It's uncategorical, a fuel-burning oracle, a phantasmagorical machine.
[...]