What is the origin of Nike's slogan?

Nike's slogan, "Just Do It," originated from a rather unconventional source. The idea came from convicted murderer Gary Gilmore's last words before his execution, "Let's do it." In 1988, Dan Wieden of the advertising agency Wieden+Kennedy adapted this phrase into "Just Do It" for Nike's campaign. It quickly became one of the most iconic slogans in advertising history 1.