Common Quote by Orson Scott Card

Primates are very territorial. It is in their nature to protect their food resources as well as their females and young.

— Jane Goodall

Primates are super smart and organized just enough to devote their free time to being miserable to each other and stressing each other out.

— Robert Sapolsky

“Human aggression is instinctual. Humans have not evolved any ritualised aggression-inhibiting mechanisms to ensure the survival of the species. For this reason man is…

— Konrad Lorenz

When humans behave murderously, such as inflicting senseless slaughter of innocents in warfare, we like to blame it on some dark, 'animalistic' instinct.

— Frans de Waal

Even the humblest mammal's strong sexual, parental, and social instincts give rise to 'do unto others as yourself' and 'love thy neighbor as thyself'.

— Charles Darwin

The evolutionary struggle for survival is really a self-serving series of blows and stabs, and yet it can lead to extremely social animals like…

— Frans de Waal

The brown monkey's instinct to kill is correct; such men are dangerous to all monkey customs.

— Robert A. Heinlein

Aggressiveness is not the main trouble with the human species, but rather an excess capacity for fanatical devotion.

— Arthur Koestler

There's a common criticism of evolutionary psychology that it's fatalistic and it dooms us to eternal strife, 'Why even try to work toward peace…

— Steven Pinker

Primates are really well designed to see who is not keeping up their end of the deal.

— Robert Sapolsky

I thought if I could understand why apes get mean and horrible and aggressive when they grow up, maybe I could understand why people…

— Sue Savage-Rumbaugh

“the medical journal The Lancet explained the process by which the dreadfuls could foster violence. People of a lower evolutionary type, the journal said,…

— Kate Summerscale