“A human society with an effective war-barrier! What’s the cost, Dr. Lyubov?”
“I’m not sure, Mr. Lepennon. Perhaps change. They’re a static, stable, uniform society. They have no history. Perfectly integrated, and wholly unprogressive. You might say that like the forest they live in, they’ve attained a climax state. But I don’t mean to imply that they’re incapable of adaptation.”
[…]
“Well, I wonder if they’re not proving their adaptability, now. By adapting their behavior to us. To the Earth Colony. For four years they’ve behaved to us as they do to one another. Despite the physical differences, they recognized us as members of their species, as men. However, we have not responded as members of their species should respond. We have ignored the responses, the rights and obligations of non-violence. We have killed, raped, dispersed, and enslaved the native humans, destroyed their communities, and cut down their forests. It wouldn’t be surprising if they’d decided that we are not human.”