the.com/hatred

love's twin, burning the vessel that carries it long before it scorches the target

means An intense, sustained hostility or loathing toward someone or something.

from From Middle English 'hatreden,' built from the noun 'hate' plus the suffix '-red' (as in 'kindred' and 'hundred'), an old ending denoting a condition or state. 'Hate' itself goes back to Old English 'hete' and the verb 'hatian,' rooted in the Proto-Germanic '*hataz'; it has cousins in German 'Hass' and likely a deeper relative in a Proto-Indo-European root meaning 'to be sad' or 'to grieve' — so the very word carries a hint that hatred begins as pain.

brain overlap
shares neural circuits with romantic love
calorie cost
chronic anger strains the cardiovascular system
group glue
shared enemies bond strangers fast
ancient root
linked to disgust, evolution's contamination alarm
self-harm
raises stress hormones in the hater first
for instance

israel palestine conflict — 75+ years of mutual animosity since 1948, over 100,000+ deaths

rwandan genocide — hutus killed 800,000 tutsis in 100 days in 1994

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