Barca only needed a draw to seal the title and they made a flawless start when record signing Philippe Coutinho scored with a stylish chipped shot in the seventh minute while Messi doubled their lead in the 38th by volleying home an outrageous cross by Luis Suarez.
Barca knew they just had to extend their record unbeaten streak to 41 La Liga matches to seal a seventh title in 10 seasons, and Philippe Coutinho fired them into an early lead.
Diego Simeone's Atletico stayed in control of the race for second by moving four points clear of Real Madrid, who have a game in hand.
When asked what Lopez's secret was following Friday's win at home to Sevilla, Morales said it was simple, "he told us to go out and enjoy ourselves".
The report also claimed that Ronaldo warned Messi he will win the Ballon d'Or if he leads Real Madrid to a third consecutive Champions League crown.
There is no love lost between eternal rivals Real Madrid and Barcelona but Jordi Alba, the Catalan full-back believes that the Los Blancos should give them a guard of honour ahead of next week's El Clasico. "In the Copa and in the Champions League, one bad day can knock you out".
Matchday 35 in the Spanish Liga Santander saw FC Barcelona crowned as champions with three games still remaining, while at the same time condemning Deportivo la Coruna to relegation. "We've had some tough times and we've overcome everything without losing, which is unbelievable". But out of the 34 matches they've played, which were the 10 most decisive results?
However, the Camp Nou outfit were themselves humiliated in the Champions League quarterfinals by Roma, while 2014, 2016 and 2017 competition winners Madrid will defend a 2-1 advantage when they host Bayern Munich in a semifinal second leg at the Bernabeu on Tuesday.
Iniesta, perhaps more than any other player in the recent history of the club, has been the embodiment of the values which Barcelona aim to promote.