Al Pacino is not ready to retire from the film industry.

Even now he has reached the age of 75, the Hollywood legend - who stars in forthcoming movie 'Manglehorn' - has ''no desire to quit'' acting just yet, as he feels there is ''no difference'' to how he works despite his advancing years.

Pacino said: ''I have no desire to quit. Sorry. Why? Why didn't I quite 20 years ago, 40 years ago? What's the point of quitting?''

The 'Godfather' star also revealed he developed the attitude to embrace life as much as possible after he watched a close friend die from cancer at the age of just 35.

In an interview with The Guardian newspaper, he explained: ''I had a friend who died of cancer at 35. That's young. I was sitting with him a good deal of time and at one point he said to me, 'I want to tell you something I've learned: three months, 30 years.' No difference. That was the insight that he got when he was close to death. And I understand that.''

Although he is certain his acting abilities have not diminished with age, Pacino accepts some people have to retire because they're physically not able to do their jobs any more.

The Best Actor Oscar winner said: ''A painter can be 100 and paint a group of college kids playing football. It doesn't matter, because he's not playing football. He just grabs a brush and does the strokes. That's the difference (with age). That's really all it is.''