Muhammad Ali (1942-2016) was an American professional boxer, social activist and philanthropist. Known for his quick wit, charismatic personality and incredible boxing skills, Ali is widely regarded as one of the greatest boxers of all time.

*Early Life and Career*

1. *Born Cassius Marcellus Clay Jr.* in Louisville, Kentucky, on January 17, 1942.
2. *Started boxing at age 12*, training with Joe Martin.
3. *Won Olympic gold medal* in the 1960 Rome Olympics (light heavyweight division).

*Boxing Career Highlights*

1. *Defeated Sonny Liston* (1964) to become the youngest heavyweight champion at 22.
2. *Fought Joe Frazier* in the iconic \"Fight of the Century\" (1971).
3. *Beat George Foreman* in the \"Rumble in the Jungle\" (1974).
4. *Won 56 of 61 fights*, with 37 knockouts.

*Social Activism and Legacy*

1. *Civil Rights Movement*: Ali advocated for racial equality and social justice.
2. *Anti-War Activism*: Refused military service in Vietnam (1967), citing conscientious objections.
3. *Islamic Faith*: Converted to Islam in 1964, changing his name to Muhammad Ali.
4. *Philanthropy*: Founded the Muhammad Ali Parkinson Center and advocated for Parkinson\'s disease research.
5. *Presidential Medal of Freedom* (2005): Received America\'s highest civilian honor.

*Quotes*

1. \"Float like a butterfly, sting like a bee.\"
2. \"I am the greatest.\"
3. \"Service to others is the rent you pay for your room here on earth.\"

*Books*

1. \"The Greatest: My Own Story\" (1975)
2. \"Muhammad Ali: His Life and Times\" (1991)

*Films*

1. \"Ali\" (2001) - starring Will Smith
2. \"When We Were Kings\" (1996) - documentary
3. \"I Am Ali\" (2014) - documentary

Muhammad Ali\'s impact extends far beyond the boxing ring, inspiring generations with his courage, conviction and compassion.