I stared at the gorilla, mesmerised. I had watched his face since he had noticed the noise and detected an extraordinary play of facial expressions: There especially was the cruelty of the hunter who skulks his prey, and the joy he's getting out of that. Just like a human being. And that was the main reason to cause my astonishment: Within those eyes, the eyes of that animal, I could see the spark of mind which I had searched for in vain in the Soror people.
- Ulysse Merуu, The Planet Of The Apes (La Planиte des singes), Pierre Boulle

https://www.deviantart.com/culpeo-fox/art/Planet-Of-The-Apes-855328999