Top 10 Motivational & Inspirational Quotes By "Muhammad Ali" On Positive Attitude, Believe In Your Self & Success Muhammad Ali was an American professional boxer, activist, entertainer and philanthropist. Nicknamed The Greatest, he is widely regarded as one of the most significant and celebrated figures of the 20th century and as one of the greatest boxers of all time. Throughout his career, Muhammad Ali--the late heavyweight-boxing champion, Olympic gold medalist, and civil rights activist--garnered a reputation for his positive and motivational outlook on life. Today we will talk about Top 10 Motivational Quotes by Muhammad Ali. Achievements:- BBC Sports Personality World Sport Star of the Year - 1973 Sports Illustrated Sportsperson of the Year - 1974 Associated Press Male Athlete of the Year - 1974 Milliyet Sports Award for World Athlete of the Year - 1975, 1976, 1979 Arthur Ashe Courage Award - 1997 BET Humanitarian Award - 2002 Bam...