Janet Taylor Lisle said this quote

They have achieved a level of organization far beyond others of their species. Unfortunately, it is being used for destructive purposes at the moment. Don't look so surprised my dear, it's in the nature of the beast.''But these squirrels are not beasts!' Amber protested. 'Oh pish-posh, we are all of us beasts,' the professor replied lightly. 'The trouble comes when we try to pretend that we're not.