Michael Schumacher is retiring from Formula One - again

This time the seven-time F1 champion says, ''it might be forever.''

F1 Grand Prix of Belgium - Practice

SPA FRANCORCHAMPS, BELGIUM - AUGUST 31: Michael Schumacher of Germany and Mercedes GP drives during practice for the Belgian Grand Prix at the Circuit of Spa Francorchamps on August 31, 2012 in Spa Francorchamps, Belgium. (Photo by Mark Thompson/Getty Images)

Michael Schumacher

SEPANG, MALAYSIA - OCTOBER 22: GP von MALAYSIA 2000 in Sepang; Michael SCHUMACHER/GER - FERRARI - beim PITWALK (Photo by Andreas Rentz/Bongarts/Getty Images)

Michael Schumacher

MELBOURNE, AUSTRALIA - MARCH 07: GP von AUSTRALIEN 1996 Melbourne; Michael SCHUMACHER/FERRARI gratuliert Damon HILL/WILLIAMS RENAULT zum Sieg (Photo by Alexander Hassenstein/Bongarts/Getty Images)

Spanish F1 Grand Prix - Race

BARCELONA, SPAIN - MAY 13: Michael Schumacher of Germany and Mercedes GP prepares to drive during the Spanish Formula One Grand Prix at the Circuit de Catalunya on May 13, 2012 in Barcelona, Spain. (Photo by Hoch Zwei/Getty Images)

F1 Grand Prix of Singapore

SINGAPORE - SEPTEMBER 23: Michael Schumacher of Germany and Mercedes GP retires early after crashing into the back of Jean-Eric Vergne of France and Scuderia Toro Rosso during the Singapore Formula One Grand Prix at the Marina Bay Street Circuit on September 23, 2012 in Singapore, Singapore. (Photo by Robert Cianflone/Getty Images)

F1 Grand Prix of Singapore

SINGAPORE - SEPTEMBER 23: Michael Schumacher of Germany and Mercedes GP retires early after crashing into the back of Jean-Eric Vergne of France and Scuderia Toro Rosso during the Singapore Formula One Grand Prix at the Marina Bay Street Circuit on September 23, 2012 in Singapore, Singapore. (Photo by Robert Cianflone/Getty Images)

Michael Schumacher

SINGAPORE , SINGAPORE - SEPTEMBER 23: Michael Schumacher of Germany and Mercedes GP is pictured after his crash during the Formula One Grand Prix of Singapore at Marina Bay Street Circuit on September 23, 2012 in Singapore, Singapore. (Photo by Vladimir Rys Photography/Getty Images)

Michael Schumacher

SUZUKA, JAPAN - OCTOBER 12: GP von Japan 2003, Suzuka; Michael SCHUMACHER/Ferrari faehrt ueber die Ziellinie (Photo by Alexander Hassenstein/Bongarts/Getty Images)

Michael Schumacher

SPAIN - OCTOBER 16: FORMEL 1: GP VON EUROPA 1994 in Jerez 16.10.94, Damon HILL (2. Williams Renault) Michael SCHUMACHER (1. Benetton Renault), Mika HAEKKINEN (3. McLaren Peugeot) (Photo by Mark Sandten/Bongarts/Getty Images)

Michael Schumacher

SUZUKA, JAPAN - OCTOBER 31: GP VON JAPAN 1999 in SUZUKA, Rennen; Eddie IRVINE/NIR, Michael SCHUMACHER/GER - Ferrari - (Photo by Andreas Rentz/Bongarts/Getty Images)

Michael Schumacher

BARCELONA, SPAIN - MAY 15: GP von SPANIEN 1992, Barcelona/ESP; Michael SCHUMACHER/GER - Benetton - (2.Platz) (Photo by Michael Kunkel/Bongarts/Getty Images)