Maxwell has told his Paris Saint-Germain team-mates they must attempt to "surprise" Barcelona from kick-off on Wednesday if they are to reach the Champions League semi-finals.
Carlo Ancelotti's side face a virtual win-or-bust second leg at the Camp Nou following last week's 2-2 draw in Paris, and while Barca's decade-long unbeaten record at this stage of the competition is daunting, Maxwell, 31, told the press PSG must not be overawed.
"We'll try to surprise them from the outset," he said. "It's a great opportunity for us to be here for a quarter-final. We want to prove that we're worthy of such a game."
Their battling first-leg display, hailed once again by Ancelotti in his pre-match press conference, has given PSG hope they can surprise Tito Vilanova's men.
The Ligue 1 leaders will be able to count on the man who produced a colossal display in Paris, captain Thiago Silva, with the Brazilian having recovered from a knee injury, and Maxwell acknowledged his compatriot will be crucial in anchoring the visitors' rearguard action.
"We're coming here with confidence, but it'll be hard to attack a team that has so much of the ball. But we only have a chance if we score. We'll need courage and character. We have to keep extremely calm when we have the ball."
Maxwell returns to the city where he spent two-and-a-half seasons with the Blaugrana before joining PSG in January 2012. The former Ajax and Inter Milan full-back, whose arrival in the French capital coincided with that of Ancelotti, is well-placed to measure just how far the club has come under its Qatari owners.
"The club has changed a lot in the last eight or nine months. The project is huge, the expectation is huge. It's not easy as there are a lot of new players, but I think we're having a great season, and we should be proud of that."