“[T]he institution that human cultures build up upon the hints presented by the environment or by man's physical necessities do not keep as close to the original impulse as we easily imagine. These hints are, in reality, mere rough sketches, a list of bare facts. [...] Warfare is not the expression of the instinct of pugnacity. Man's pugnacity is so small a hint in the human equipment that it may not be given any expression in inter-tribal relation. [...] Pugnacity is no more than the touch to the ball of custom, a touch also that may be withheld.” WarCulturePsychologyInstinctImpulseWarfareCustomHuman InstinctEvo Psych Is Wrong Book:PATTERNS OF CULTURE Source: PATTERNS OF CULTURE