“One of the few truly strategic people who can execute like a mother.”
— Marshall Ross, CCO, Cramer-Krasselt
“Whether you need someone to write killer headlines, run a meeting, or just be the tallest guy in the room, John always delivers.”
— Sam Bergen, CMO, Illumination
“In our time working together I feel I learned more about the creative process than with any other creative partner.”
— Heather Malenshek, CMO, Harley-Davidson
“Carstens is running yours? F*ck. ”
— Pitch Competitor, Razorfish
“Smart. Talented. Impeccably coiffed. And most importantly, tall.”
— Anonymous Commenter, AgencySpy
 

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