 In the 1950s, he also published his own magazine, "The Critic".Cohen began writing a theatre column for the "Toronto Telegram" in 1957 and was hired away by the "Toronto Daily Star" two years later, becoming the paper's entertainment editor and remaining there until his death.Cohen was known for his integrity as a critic and did not hesitate to give negative reviews, breaking with the common critical practices of the time which consisted mostly of uncritical praise.