José Mourinho delivered one of his most memorable putdowns when he claimed Arsenal manager Arsène Wenger is a "specialist in failure".
The Chelsea manager responded to Wenger's remark he has a "fear to fail" ahead of the clubs' FA Cup ties this weekend.
"He is a specialist in failure, I'm not," Mourinho responded.
"If supposedly he is right and I'm afraid to fail, it's because I haven't failed many times. Maybe he's right. Maybe I'm not used to failing.
"The reality is he is a specialist. Eight years without a piece of silverware, that's failure. If I do that at Chelsea, eight years, I leave London and I don't come back."
Wenger has won just one trophy since Mourinho arrived in England nearly 10 years ago. Chelsea wrestled the title away from Arsenal's "Invincibles" in the Portuguese's debut Premier League campaign and the Gunners have won just one FA Cup in the last nine years.
In that time, Mourinho has won two titles, two League Cups and the FA Cup in England, two Scudetti in Italy, as well as the Coppa Italia, with Internazionale, the Copa del Rey and Primera Liga championship in Spain with Real Madrid, and a Champions League.
Mourinho's trophies
Chelsea's manager Jose Mourinho raises t(01 of09)
Open Image ModalCARDIFF, United Kingdom: Chelsea's manager Jose Mourinho raises the Carling Cup trophy after defeating Liverpool in ther Carling Cup Final football match at the Millennium Dome in Cardiff, Wales, 27 February, 2005. Chelsea won 3-2 in extra time. AFP PHOTO/JIM WATSON NO TELCOS, WEBSITES SUBJECT TO SUBCRIPTION OF LICENCE WITH FAPL AT WWW.FAPLWEB.COM (Photo credit should read JIM WATSON/AFP/Getty Images) (credit:Getty Images)
(FILES) Chelsea's Manager Jose Mourinho(02 of09)
Open Image Modal(FILES) Chelsea's Manager Jose Mourinho (C) holds aloft the Barclays Premiership trophy beside Frank Lampard (L) and John Terry (R) during the celebrations after the game against Charlton at Stamford Bridge in London, 07 May 2005. Jose Mourinho's three-year reign at Chelsea came to an abrupt end Thursday 20 September 2007, as the Portuguese manager's fraught relationship with the club's Russian owner Roman Abramovich finally reached breaking point. An announcement that will send shockwaves through English and European football came in the early hours of Thursday morning with Chelsea claiming that Mourinho had left 'by mutual consent.' AFP PHOTO/Adrian DENNIS/FILES (Photo credit should read ADRIAN DENNIS/AFP/Getty Images) (credit:Getty Images)
Soccer - FA Barclays Premiership - Chelsea v Manchester United - Stamford Bridge(03 of09)
Open Image ModalChelse manager Jose Mourinho throws a second winners medal into the crowd (credit:PA)
Carling Cup Final: Chelsea v Arsenal(04 of09)
Open Image ModalCARDIFF, UNITED KINGDOM - FEBRUARY 25: Chelsea Manager Jose Mourinho and his Assistant Steve Clarke celebrate with the trophy following their team's victory at the end of the Carling Cup Final match between Chelsea and Arsenal at the Millennium Stadium on February 25, 2007 in Cardiff, Wales. (Photo by Clive Mason/Getty Images) (credit:Getty Images)
Chelsea manager Jose Mourinho lifts the(05 of09)
Open Image ModalLondon, UNITED KINGDOM: Chelsea manager Jose Mourinho lifts the FA Cup Trophy after beating Manchester United 1-0 at Wembley Stadium in London, 19 May 2007, during the FA Cup Final football match. AFP PHOTO/CARL DE SOUZA (Photo credit should read CARL DE SOUZA/AFP/Getty Images) (credit:Getty Images)
Inter Milan's Portuguese coach Jose Mour(06 of09)
Open Image ModalInter Milan's Portuguese coach Jose Mourinho (2nd R) celebrates with players after winning the 17th Italian serie A football championship, 'scudetto', on Duomo Square in Milan on May 16, 2009. Inter Milan won a fourth straight Serie A title on May 16 despite not playing when nearest challengers AC Milan lost 2-1 at Udinese. AFP PHOTO / GIUSEPPE CACACE (Photo credit should read GIUSEPPE CACACE/AFP/Getty Images) (credit:Getty Images)
Inter Milan's Portuguese coach Jose Mou(07 of09)
Open Image ModalInter Milan's Portuguese coach Jose Mourinho holds the trophy to celebrate the 17th Italian serie A football championship, 'scudetto',at the end of the Serie A football match Inter Milan vs Atalanta at San Siro Stadium in Milan on May 31, 2009. AFP PHOTO / GIUSEPPE CACACE (Photo credit should read GIUSEPPE CACACE/AFP/Getty Images) (credit:Getty Images)
Inter Milan's Portuguese coach Jose Mour(08 of09)
Open Image ModalInter Milan's Portuguese coach Jose Mourinho kisses the Cup after his team defeated AS Roma in the Coppa Italia (Italian Cup) final on May 5, 2010 at Olimpico stadium in Rome. Inter Milan defeated AS Roma 1-0 to win the title. AFP PHOTO / ALBERTO LINGRIA (Photo credit should read ALBERTO LINGRIA/AFP/Getty Images) (credit:Getty Images)
Inter Milan's Portuguese coach Jose Mou(09 of09)
Open Image ModalInter Milan's Portuguese coach Jose Mourinho celebrates with the trophy after winning the UEFA Champions League final football match Inter Milan against Bayern Munich at the Santiago Bernabeu stadium in Madrid on May 22, 2010. Inter Milan won the Champions League with a 2-0 victory over Bayern Munich in the final at the Santiago Bernabeu. Argentine striker Diego Milito scored both goals for Jose Mourinho's team who completed a treble of trophies this season. AFP PHOTO / CHRISTOPHE SIMON (Photo credit should read CHRISTOPHE SIMON/AFP/Getty Images) (credit:Getty Images)
Wenger's Arsenal have lost a Champions League final and two League Cup finals - one to Mourinho's Chelsea - in that period.
The longest serving manager in English football, Wenger brought three titles and four FA Cups to Highbury in his first eight years with the club.
Chelsea travel to Manchester City for their fourth round tie tomorrow while Arsenal host Liverpool on Sunday.