Mario Balotelli scored a second-half header to give the Azzurri a 2-1 win after Daniel Sturridge had leveled the game following Claudio Marchisio's 25-yard drive.
Pirlo, who led the side in the absence of the injured Gianluigi Buffon, indicated that he was impressed with how Italy carried out its game-plan, especially considering the heat and humidity of the Amazonian city of Manaus.PHOTOS: Opening ceremony | Brazil protests | Soccer fanatics | Fan tattoos
"I was the captain of a courageous Italy," the 35-year-old told reporters after the game. "An Italy that wanted to play good football and impose its style on England. We had a good game despite the terrible heat. We know that we are a strong team, despite the many difficulties, and we can go forward."
The Juventus midfielder also gave his approval to Cesare Prandelli's strategy of playing him alongside Marco Verratti in the center of the pitch.
"The important thing was to win and we did it," he continued. "I had a great time playing alongside Marco. During the first half we did very well, and it is right to continue along this path."
Italy plays Costa Rica on June 20 before finishing its Group D campaign against Uruguay on June 24.