"I won eight titles and I am not [over] the moon because I won against Manchester City", he added.
While still nine points from safety, it was an fantastic end to a match that had started with Livermore showing composure that belied his role as a midfield enforcer as he cut away from Victor Lindelof to be denied by David De Gea. I know how to win and I believe in myself.
But instead of capitulating as the final whistle neared, like they have done so many times this season, Albion held firm and kept United's glittering and expensively-assembled team of stars out.
"We were the masters of complicated football". "I saw lots of people in the moon because we won against Manchester City". You win, of course, with quality, but with consistency in every level, not just the performance level but also the mental level.
"With my experience you don't titles with inconsistency. One of the things we have to improve is our consistency".
"I want the players to express themselves, show the outside world what good players they are". You could see the difference in attitude.
United threw the kitchen sink at the Baggies, who have squandered so many leads late on this season.
This is the deafening level of dominance that the team once famously derided as "noisy neighbours" by Ferguson will now be out to cement after what could still end up as an unprecedented 100-goal, 100-point season.
Ben Foster denied Lukaku with two fine saves and there was another occasion when the United striker had the chance to go through the middle only to be let down by his control.
While it may be premature to place City in that rarified air, they could make a case by breaking the Premier League points record of 95 set by Chelsea in 2004-05. To do that, Mourinho would also need a team filled with players of great character, the new Rio Ferdinand or Roy Keane.
Manchester United were brought back down to earth after the high-octane drama of the Manchester derby as the Reds were stunningly beaten at Old Trafford by relegation favourites West Bromwich Albion.
Guardiola and his players will have the chance to celebrate properly on Sunday when they host Swansea in their next fixture.