As a newspaper journalist, he had been a book critic and editor of the Editorial Page for the Dallas Times Herald when John F.
Kennedy was assassinated, which galvanized his role at the paper to help untangle and lift a demoralized city in search of its soul.
Leaving full-time journalism in 1968, Greene went on to become a prolific author of books, notably on Texas lore and history.
His notoriety led to stints in radio and TV as talk-show host.
By the 1980s, his commentaries were being published by major media across the country.
He had become a sought-after source for Texas history, anecdotes, cultural perspective, facts, humor, books, and politics.
When the 1984 Republican National Convention was held in Dallas, Greene granted sixty-three interviews about Texas topics to major media journalists.
Greene's 1990 book, Taking Heart – which examines the experiences of the first patient in a new heart transplant center (himself) – made the New York Times Editors Choice list.