In 1983 ministers of the revolutionary Sandinista government lined up on the tarmac to welcome Pope John Paul II on his first visit to Nicaragua. Moments later, TV cameras showed the pontiff wagging a finger at the kneeling Ernesto Cardenal, priest and minister of culture, admonishing him for mixing religion and politics.

But for Cardenal, who has died aged 95, there was no distinction between the two. His beliefs as a Roman Catholic growing up in Central America in the 1940s and 50s led him to seek social justice in a country that had for many years suffered under the dynastic rule of the Somoza family. His faith also meant he could not avoid political responsibility if it was thrust upon him.