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USA Today said the young actor was "a revelation, his movement, expressions and voice making the boy's terrors and his ferocious intelligence seem equally natural."
The New York Times described the experience as "the kind of smashing Broadway debut young actors classically dream about."
The New York Daily News said Sharp "dazzles as bright as the high wattage effects with a physical and emotionally intense star turn."
Over all, the Hollywood Reporter said the production shows the power of theater.
"It makes us want to reconsider the world around us, without missing a single one of its infinite details," it added.