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From the time we're born, our brothers and sisters are our collaborators and coconspirators, our role models and our cautionary tales.

Jeffrey Kluger (2011). “The Sibling Effect: What the Bonds Among Brothers and Sisters Reveal About Us”, p.8, Penguin
From the time we're born, our brothers and sisters are our collaborators and coconspirators, our role models and our cautionary tales.