Welcomed by some and rejected by others, Laudato Si’ emerged as one of the most important documents of Francis’ pontificate.

As cardinals prepare to enter the Sistine Chapel in a few days to elect a new pope, they are engaged in intense discussions over plates of carbonara and bottles of wine in the Borgo, the village-like quarter of cobbled lanes, tiny piazzas and ornate fountains that lies a few yards from the walls of the Vatican City State.