Logic dictates that given their extremely high level of technical development... they're an advanced culture... therefore, peaceful and enlightened.
12 seconds sound clip from the Mars Attacks! (1996) movie soundboard.
You can hear this line at 00:21:28 in the Blu-ray version of the movie.
Quote context
[...]
- Whoa. He made the international sign of the doughnut.
- From the limited information available, I've made three extrapolations.
- You mean they can read our thoughts?
- What about their intentions? Are they a friendly people?
- The human race, on the other hand... is an aggressively dangerous species.
- Now, I suspect they have more to fear from us... than we from them.
- Doctor. Thank you, professor.
- All green of skin... 800 centuries ago.
[...]