THESE days the eyes of Muhammad Ali, once so sparkling and mischievous, are invariably hidden behind sunglasses.

The body, as he celebrates his 70th birthday today, is frail, the gait uncertain, a walking frame or the arm of an aide often required.

Yet more than 30 years since Ali hung up his gloves after losing his last fight against Trevor Berbick at the age of 39 years and 328 days, following a career forged amid a golden generation of boxing heavyweights, he remains the greatest sportsman who ever lived.

Mention his name and the chances are it will conjure up a kaleidoscope of memories.

Great fights such as The Rumble in the Jungle against George Foreman and the Thrilla in Manilla against Joe Frazier, whose funeral Ali attended in November.

Moments of great courage, too, such as the lighting of the Olympic flame at the 1996 Olympics in Atlanta when Ali, ravaged by the effects of the Parkinsons disease he has endured for 28 years, gave the world’s greatest sporting festival an iconic image.

You do not have to be middle aged to appreciate the breadth of Ali’s achievements. You just have to take a passing interest in the history of sport and its ability to mould and shape the world around us.

Ali is not just a 70-year-old has-been. His career is a reminder of how far sport can take those determined to ride their natural gifts, in Ali’s case hand and foot speed which saw him win the Olympic heavyweight gold medal in Rome in 1960 before turning professional.

In a boxing world which currently lacks credibility, with its plethora of title organisations and its myriad of weight divisions, it is difficult to convey the kudos the world heavyweight title bestowed back in Ali’s day.

Suffice to say that he was, almost certainly, the most famous individual on the planet.

If his latter years had been kinder in health terms, no doubt he would stand up at his birthday party in his house in Paradise Valley, Arizona, with Lonnie, his childhood sweetheart and now fourth wife, and for old time’s sake launch into one of those eloquent examples of the Louisville Lip.

He’d enthral his friends with tales of Foreman and Frazier and Ernie Terell and Jerry Quarry. He might explain how he managed to fight on to win by a split decision after breaking his jaw against Ken Norton.

Almost certainly he would wax lyrical about the night he fought what has been deemed the perfect fight against Cleveland Williams, stopping his opponent in the third round.

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HE SAID IT...

“Cassius Clay is a slave name. I didn’t choose it and I don’t want it. I am Muhammad Ali, a free name – it means beloved of God, and I insist people use it when people speak to me and of me."
Announcing his conversion to the Muslim faith after first Liston fight

“Get up sucker and fight. Get up and fight."
During second Liston fight, 1965

“What’s my name, fool? What’s my name?"
During Ernie Terrell fight, 1967 - Terrell had refused to recognise his name change

"I’m so fast that last night I turned off the light switch in my hotel room and got into bed before the room was dark."
Before George Foreman fight, 1974

“Float like a butterfly sting like a bee - his hands can’t hit what his eyes can’t see."
Before Foreman fight, 1974

“That all you got, George? That all you got?"
During Foreman fight, 1974

“It will be a killer and a chiller and a thriller when I get the gorilla in Manila."
Before third Joe Frazier fight, 1975

He might even mention the time he felt Enery’s ‘Ammer, the left hook of British heavyweight Henry Cooper, in front of 45,000 British fight fans on a night mired in controversy when the laces of his gloves inexplicably came undone gaining him vital seconds to recover from a crashing knockdown.

He’d reminisce about the days when reporters recorded every syllable of his pre-fight patter.

“If you even dream of beating me you’d better wake up and apologise,’’ he famously warned one opponent.

Instead, these days Ali lets the black-and-white television pictures or the early-morning closed-circuit cinema showings of him at his precocious best do the talking.

Some say Joe Louis was the best heavyweight boxer the world has ever seen and perhaps technically he does just eclipse the boy who was born Cassius Marcellus Clay on January 17, 1942.

But in terms of greatness there is no contest. Ali transcended sport. He proved greatness is not solely to do with what happens inside the ring or on the athletics track or on the football field.

When he told us how he “roped a dope’’ in Foreman, we chuckled at his humour.

We marvelled at his eloquence when discussing the world’s problems with popes and presidents. We respected his objection to the Vietnam War which cost him three years of his career.

We were at first quizzical but then accepting of his conversion to Islam and his consequent change of name.

But mostly we were bedazzled by the lightning hands and feet of the fastest heavyweight in history as he saw off the likes of Sonny Liston, Foreman and Frazier.

In all he held the heavyweight title three times, winning 22 world title fights and losing three, including his ill-advised brutal encounter with former sparring partner Larry Holmes when he was already in the midst of physical decline and sporting a bloated body and wandering mind.

Some would say that is nothing unique and that Evander Holyfield and Lennox Lewis have also held the world title three times.

That, however, would be to miss the unique energy and humility of Ali, a man whose boastful ‘I’m the king of the world’ catchphrases were always tinged with an endearing dash of selfmockery.

Only footballer Pele and golf’s Tiger Woods, prior to his self-destruction, come near to emulating Ali’s universal sporting appeal, men who when they play, hold the world in awe.

Some might say Carl Lewis, Jack Nicklaus, Don Bradman, Bjorn Borg and maybe even Babe Ruth, the greatest player in baseball history, deserve their place in that debate.

But, when all is duly considered, one man is way out in front. The man who “floated like a butterfly and stung like a bee’’.

It is no longer possible to know what truly goes on behind those sunglasses.

But the memories remain.

And for that all sports lovers should raise a 70th birthday toast. Muhammad Ali, still the greatest.

Top five fights

1: ALI THIRD-ROUND KO V CLEVELAND WILLIAMS, HOUSTON 1966

ALI was at his devastating best against one of the hardest hitters in the sport’s history.

Bouncing around the ring on the balls of his feet he married relentless and blinding speed with an unerring accuracy on his left jab. Williams barely managed a punch in anger.

Ali floored his opponent three times towards the end of round two and only the bell’s intervention prolonged the fight into the first minute of the third, when Williams crumpled to the canvas again.

It was an amazing performance – seven minutes showcasing boxing as close to perfect as it is ever likely to get.

2: ALI 14TH-ROUND TECHNICAL KO V JOE FRAZIER, MANILA 1975

ALI triumphed in the pair’s rubber match, the sheer brutality of which eclipsed even those two awesome meetings which had gone before.

Ali called it “the closest thing to death’’. Frazier stormed forward and swamped Ali with hooks, sustaining tremendous punishment in the process.

Frazier’s trainer Eddie Futch pulled his man out at the end of the 14th round.

Ali, ahead on the cards, was on the verge of quitting too.

3: ALI EIGHTH-ROUND KO V GEORGE FOREMAN, KINSHASA 1974

THE Rumble in the Jungle – and the extraordinary circumstances called for Ali’s most extraordinary tactics. To the disbelief of all observers Ali opted to play “rope-a-dope’’ with the fearsome Foreman, lolling back on the ropes and inviting punishment.

Foreman punched himself out and Ali pounced, a left and right to Foreman’s head dropping the champion and winning Ali the title back.

4: ALI SEVENTH-ROUND KO V SONNY LISTON, MIAMI 1964

THE brooding, menacing Liston was supposed to put the loudmouth from Louisville in his place.

Cassius Clay, as Ali was known then, was pronounced “scared to death’’ by a physician before the fight.

All the experts tipped a Liston walkover. Then Clay went out and toyed with Liston. He made the baddest man on the planet look flatfooted, fat and old.

Liston retired on his stool at the end of the seventh and Clay – who announced his conversion to Islam after the fight – was world heavyweight champion.

5: ALI ON POINTS V ERNIE TERRELL, NEW YORK 1967

ALI was furious with the leading contender Terrell, who refused to refer to him by his new name in the build-up to their bout.

He made the challenger pay by inflicting upon him a sustained and deliberately drawn-out 15-round beating.

“What’s my name?’’ Ali repeatedly sneered during a comprehensive humiliation.