The Uruguayan hadn't netted for six games, but broke that drought with a brace to sink Cagliari 2-1.
"We wanted this victory very much, as it is bringing Napoli closer to a dream. You never know in football.
"These goals are down to the team, who work very hard and put me in a position to score. We believe in hard work and have done since the start of the season, so you can see the results.
"We will keep doing our best and cultivating this little dream of ours."