The Brazil forward marked his first game since completing a world-record £200m move from Barcelona with a goal and an assist as PSG cruised to a 3-0 win at Guingamp.
Some fans and pundits have suggested that moving from La Liga to Ligue 1 is a step down, particularly after leaving Camp Nou, but Neymar hit back at such criticism.
"I knew it would be very difficult to leave Barca but I am very happy to be here," the 25-year-old is quoted by L'Equipe as saying.
"People think that you die after leaving Barca, but no, it's the opposite. I'm more alive than ever, I play, I'm very happy. The country, the city and the team change, but football is the same."
Focusing on the game in particular, Neymar told the official PSG website: "It's always important to score, and I hope to score more, but I want to help the team win even more, first and foremost.
"We played well, scored goals and we're satisfied with the game. We linked up well on the pitch, we're going to continue getting to know each other. There are quality players, it's a great team. We're going to keep getting better."
Up next for PSG is a Ligue 1 fixture against Toulouse at the Parc des Princes on Sunday.