Jack Nicholson has laughed off reports suggesting his withdrawal from Hollywood is down to memory problems, and says he has a mathematician's brain.
The actor, who last appeared in a film in 2010, was said to have stepped out of the spotlight because he can no longer memorise scripts.
However, Nicholson insists the speculation is completely false and maintains the only reason he isn't on the big screen is because he no longer has the desire to act.
He told Britain's The Sun: "I have a mathematician's brain ... I'm not going to work until the day I die, that's not why I started this. I mean, I'm not driven. I was driven - but I'm not, I don't have to be out there any more.
"In fact, there's part of me that never really liked being out there ... You get older, you change."
The 76-year-old, who began his career in the 1950s, also fears audiences no longer enjoy the type of films he wants to make: "The movie business is the greatest business but I only want to do films that move people, films about emotions and people.
"I had the most chilling thought that maybe people in their twenties and thirties don't actually want to be moved anymore. They may want just to see more bombs, more explosions, because that is what they have grown up with. And I'll never do that type of movie."
Nicholson's love of wild parties is legendary and he's known as one of the original Hollywood womanisers. Rolling Stones rocker Keith Richards famously said he once had to tell Nicholson to go home, but the actor insists he has always been able to take care of himself.
"Contrary to opinion, however sated I got, I always looked after myself. I'm in good shape - a little stout, but healthy. And I've done it all," he said.
"I've woken up in trees, I've woken up almost hanging off cliffs, but I've always known how to sort myself out."
Nicholson has noticed many changes as he's succumbed to the ageing process. He is now careful about the kind of women he approaches as it "doesn't feel right" to "hit on" ladies these days.
The star mourns his past life, especially as he has found himself having to stage a new beauty routine.
"If men are honest, everything they do and everywhere they went was for a chance to see women. A lot of me being an actor was about that, and about me.
"There were points in my life when I felt oddly irresistible to women. I'm not in that state now, which makes me sad," he said.
"Now I don't have any hair below my sock line, and that means you're getting old, Jackie boy. It comes out of my ears instead. I mean, how many times have I slashed my earlobes?"
The star was happy to discuss his love life, admitting he regrets never having a relationship which lasted. He romanced Anjelica Huston on and off for about 16 years and was deeply affected by their final break-up in 1989.
"That annihilated me. I'm kind of childish emotionally and I did make a mistake in the way I handled it," he said.
"I would love that one last romance, a real romance, but I'm not very realistic about it happening. What I can't deny is my yearning.
"No woman has ever recognised what I say as being legitimate. They don't trust me. They think of my reputation - Jack the Jumper - so I'm damned by what women think."