Lewis Hamilton claims that he is hungrier than team-mate Nico Rosberg as the duo continue their battle for the 2014 title in Monaco.
Hamilton, who has won the last four races, leads the title race by three points over his Mercedes team-mate after the opening five rounds of the year.
"Let me tell you this: I come from a not-great place in Stevenage and lived on a couch in my dad’s apartment - and Nico grew up in Monaco with jets and hotels and boats and all these kind of things - so the hunger is different," he told the Official F1 website.
"I want to be the hungriest guy in the cockpit from all 22 of us - even if every driver has to believe that he’s the hungriest - because if I were to come here believing that Nico is hungrier than me then I might as well go home. So I’ve got to be the hungriest - to win the world championship you need to be the hungriest."
Hamilton insists that the two still have a healthy relationship.
"When you’re so competitive it is impossible to be best friends - but then it stays respectful," he said. "We will always have the years in karting, that kind of foundation of a long time ago."
Rosberg is set to remain with Mercedes once his current expires after signing a two-year extension, according to the BBC.