That is the view of both Jenson Button and managing director Jonathan Neale on the day McLaren launched their latest challenger - the MP4-29 - ahead of the new Formula One season without Martin Whitmarsh as team principal.
Following an internal coup at McLaren last Thursday, with Dennis back in his former role as chief executive officer after ousting Whitmarsh following a shareholders' vote, the 66-year-old is again in overall charge of the F1 operation.
After resigning from his team principal role at Lotus on Friday, Eric Boullier is poised to take over as team boss from Whitmarsh, who has endured five unsuccessful years in charge.
Whitmarsh is understood to have retreated to his holiday home on Ile de Re off the west coast of France to lick his wounds.
As yet McLaren have made no reference to Whitmarsh's exit, although Button and Neale both extolled Dennis' virtues after the wraps were taken off the new car via an online launch.
Button, hired by Whitmarsh after winning his world title with Brawn GP in 2009, said of Dennis: "This team, under Ron, has won multiple world championships, back to the days of Ayrton (Senna) and Alain (Prost).
"There's so much history of Ron in this team. He's a true racer, he's a true fighter, and he really has built this team up over the years.
"It's good for the team, good for Ron, that he has the chance to drive this team on again.
"Everyone here is excited about the challenge of 2014 with Ron in charge."
Neale, a long-standing member of the McLaren organisation, made no mention of Whitmarsh, instead remarking as to how Dennis will drive the team forward.
"For those who know Ron, he is as fired up as he ever has been, and more passionate now than ever," said Neale.
"He's excited about the changes ahead of us. He is very operational with us in the business, and he has a very strong vision about the brand, the values.
"It's not just about making sure McLaren is totally focused on winning, but there is that way McLaren go about things.
"If ever there was somebody who had a very strong vision, and a sense of true north, and how it is to win in Formula One and why that's important, then he's got it in spades, so it's exciting times."