Collective thinking is short lived

“Are you preparing for another war, Plutarch?” I ask. “Oh, not now. Now we’re in that sweet period where everyone agrees that our recent horrors should never be repeated,” he says. “But collective thinking is usually short-lived. We’re fickle, stupid beings with poor memories and a great gift for self-destruction. Although who knows? Maybe this will be it, Katniss.” “What?” I ask. “The time it sticks. Maybe we are witnessing the evolution of the human race. Think about that.”

Suzanne Collins (2010) Mockingjay. Scholastic. pg 276.