Plural of altruism; instances or types of unselfish concern for the welfare of others.
From French 'altruisme,' coined in the 19th century from Latin 'alter' meaning 'other,' popularized by philosopher Auguste Comte.
Altruism is weirdly complicated—even when you do something purely for others, your brain releases 'feel-good' chemicals, so science suggests true selflessness might be neurologically impossible, which is kind of beautiful!
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