From the looks of some parts of this planet, I'd say that was a fair bet.
5 seconds sound clip from the Planet of the Apes (1968) movie soundboard.
You can hear this line at 01:42:24 in the Blu-ray version of the movie.
Quote context
[...]
- Cornelius was right, Doctor. He proved it.
- Man was here first. You owe him your science, your culture... whatever civilization you've got.
- Then answer me this. If man was superior, why didn't he survive?
- Wiped out by a plague. Some natural catastrophe, a storm of meteors.
- From the looks of some parts of this planet, I'd say that was a fair bet.
- He is.
- He knew all the time. Long before you found your caves, he knew.
- Defender of the Faith. Guardian of the Terrible Secret...
- That's it, isn't it, Doctor?
- What I know of man was written long ago, set down by the greatest ape of all, our Lawgiver.
[...]