Fernando Alonso, world champion 2005-6: "I always said to become champion when Michael was still on the track has more value than when he retires and I was extremely lucky to win the last two championships. All the drivers wish him the best with his new life with his family and it has been for us a pleasure to race with him."
Alonso says beating Schumacher gives his titles more weight
Mika Hakkinen, world champion 1998-99: "If you take the overall picture then there is no doubt about Michael and what he has done in his career in F1. He has achieved something remarkable. I don't think there will be a driver in the future who can beat that achievement for a long time, or maybe ever."
Felipe Massa, 2006 Ferrari team-mate: "He is a great guy, a fantastic person for me because he wanted me in the team, and I will miss him."
Flavio Briatore, Renault team boss: "What Michael Schumacher has done today will go down in the history of F1. He was flying. I don't know what he had but he was literally flying. We've won a difficult championship against an extrememly difficult rival, Ferrari, so congratulations to them too for keeping the title open even too much."
Drivers' titles: 7
Pole positions: 68
Fastest laps: 75
Stirling Moss, British motorsport legend: "I'm sure he will be remembered, first of all, for being able to galvanise a team so well. He was an amazing personality.
"He got Ferrari, when they were really nowhere, and took the right men with him and he brought the team forward, galvanised them together, and with his ability and the sort of person he is he got them into being the winning car they are today."
Niki Lauda, three-time world champion: "He is the greatest. Nobody will ever beat him, as long as we are alive."
David Coulthard, rival: "He is the greatest all-round racing driver this sport has seen."