The Gunners produced some wonderful football for the thumping victory.
Two unerring finishes from Lacazette either side of an Andre Schurrle equaliser had Arsenal ahead, with Pierre-Emerick Aubameyang netting twice off the bench after Ramsey had scored mere seconds after his introduction.
Emery said, "Our performance over the 90 minutes was very important; to be together and with our performance we found each moment and each player".
Aaron Ramsey scored a goal of the season contender as Arsenal thrashed Fulham to record a ninth straight win for the first time since April 2015. "We have a better position in the table for our objections, but we have to be calm". We have a great team spirit, as you can see on the pitch. We are happy but also calm, we know it's hard in each match.
'We are happy but also calm because we know each moment, each match, is hard. We need to improve quickly on this. The players feel that. "We are going to continue working".
Indeed, at the beginning of the season Emery even suggested Ramsey could be a captain for Arsenal one day.
"When we lost the first two matches against Manchester City and Chelsea, we were calm, and when we are winning now, I think we need to be in the same way in our mentality", Emery said.
"I don't want to look back". Every match is different, every match is hard.
Any hope of another Fulham comeback was quelled with 23 minutes left, as Ramsey, 39 seconds after coming on, flicked a backheel in off the post after a super counter-attack gave Aubameyang room to cross.
Arsenal were close to a second goal as they again exploited the space behind wing-back Cyrus Christie, with Henrikh Mkhitaryan's effort well saved by Marcus Bettinelli. We opened all the doors.
Every global break is important also for the national team, for the players who want to join up with their team and defend their team, and for us to continue working with more calm.
"Arsenal showed their quality and pace, but we surrendered in the last 10 minutes".