17 January 2012
Last updated at 00:55
Muhammad Ali, the former undisputed world heavyweight boxing champion has turned 70 years of age.
In the late 1960s, Magnum photographer Thomas Hoepker captured some intimate moments of the charismatic boxing legend.
Born Cassius Marcellus Clay Jr on January 17, 1942, in Louisville, Kentucky he changed his name to Muhammad Ali in 1964.
His legendary speed in the ring helped turn him into one of the most famous faces on the planet.
Apart from his achievements in the ring Ali has also come to be seen as one of the iconic figures of the 20th century for the way he lived his life away from boxing.
Ali won the World Heavyweight Championship three times, and earned respect around the world both for his unique talent and for his stand against racial oppression and the Vietnam War - he was stripped of his title and banned from boxing for refusing to join the United States Army.
He received an honorary Olympic gold in 1996. Ali said he'd thrown his own in the Ohio River in disgust at racism.
In later years Ali has been affected by Parkinson's disease, which has been attributed to repeated blows to the head during his boxing career.
Ali continues to raise money for the charities he supports including his cultural centre in his home town of Louisville, Kentucky.
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