"It will be remembered as the greatest mass delusion in the history of the world—that CO₂, the life of plants, was considered for a time to be a deadly poison."

"What historians will definitely wonder about in future centuries is how deeply flawed logic, obscured by shrewd and unrelenting propaganda, actually enabled a coalition of powerful special interests to convince nearly everyone in the world that CO₂ from human industry was a dangerous, planet-destroying toxin." Astrophysicist Dr. Willie Soon

"It will be remembered as the greatest mass delusion in the history of the world—that CO₂, the life of plants, was considered for a time to be a deadly poison." Atmospheric physicist Dr. Richard Lindze quoted by Dr. Willie Soon