Page 428 - Enders_Game_Full_Book

That was the simplest explanation, the one easiest to accept. Any other explanation would force him to admit the possibility that Rooter's totem tree somehow talked to the piggies.
"What will make you decide?" said Human. "We give gifts to the wives, to win their honor, but you are the wisest of all humans, and we have nothing that you need."
"You have many things that I need," said Speaker.
"What? Can't you make better pots than these? Truer arrows? The cape I wear is made from cabra wool-- but your clothing is finer."
"I don't need things like that," said Speaker. "What I need are true stories."
Human leaned closer, then let his body become rigid in excitement, in anticipation. "O Speaker!" he said, and his voice was powerful with the importance of his words. "Will you add our story to the Hive Queen and the Hegemon?"
"I don't know your story," said the Speaker.
"Ask us! Ask us anything!"
"How can I tell your story? I only tell the stories of the dead."
"We are dead!" shouted Human. Miro had never seen him so agitated. "We are being murdered every day. Humans are filling up all the worlds. The ships travel through the black of night from star to star to star, filling up every empty place. Here we are, on our one little world, watching the sky fill up with humans. The humans build their stupid fence to keep us out, but that is nothing. The sky is our fence!" Human leapt upward-- startlingly high, for his legs were powerful. "Look how the fence throws me back down to the ground!"
He ran at the nearest tree, bounded up the trunk, higher than Miro had ever seen him climb; he shinnied out on a limb and threw himself upward into the air. He hung there for an agonizing moment at the apex of his leap; then gravity flung him downward onto the hard ground.
Miro could hear the breath thrust out of him by the force of the blow. The Speaker immediately rushed to Human; Miro was close behind. Human wasn't breathing.
"Is he dead?" asked Ouanda behind him.
"No!" cried a piggy in the Males' Language. "You can't die! No no no!" Miro looked; to his surprise, it was Leaf-eater. "You can't die!"
Then Human reached up a feeble hand and touched the Speaker's face. He inhaled, a deep gasp. And then spoke, "You see, Speaker? I would die to climb the wall that keeps us from the stars."