They said "NO!"

At first they barked their refusal. And then, on a historic day comemorated by my species and fully documented in the secret scrolls, there came an Ape called Aldo, who didn't bark. He articulated. He spoke a word which had been spoken to him, time without number, by Humans. He said 'No'.

-Cornelius, Escape from the Planet of the Apes.