In the piece, Sourisseau documents the history of the magazine, which then goes on to a vivid description of what happened January 7, of which Sourisseau was one of those who survived the attack.
While he admits "2015 was the most terrible year in the history of Charlie Hebdo," he adds that the newspaper would not have survived financially if the horrific event had not happened.
"In short, Jan. 7 was our luck because at once the whole of France began to read Charlie. Imagine the effect that reading such words can make on those who tried to get up. Again, the existence of Charlie was an anomaly. Even in these nightmarish times," Sourisseau said in the (translated) piece, emailed to CNBC.
Following the attack in January 2015, some 7.5 million individuals bought the first post-attacks issue, and 200,000 people signed up for a subscription to the magazine.
—Agence France-Presse contributed to this report