It is the future you see.
4 seconds sound clip from the Star Wars: Episode V - The Empire Strikes Back movie soundboard.
You can hear this line at 01:17:38 in the Blu-ray version of the movie.
Quote context
[...]
- Hmm... Control, control. You must learn control!
- I saw... I saw a city in the clouds.
- Hmm... Friends you have there.
- Future?
- Difficult to see. Always in motion is the future.
- Decide you must how to serve them best.
[...]