You'
ve got to accentuate the positive, Eliminate the
negative, Latch on to the affirmative,
Don't
mess with
Mister In-between." These
lines are repeated over and over throughout the
song. The
song appeared in 1945 in the film Here Come the Waves, sung by
American entertainer Bing Crosby (1904-1977) and the female
trio known as the Andrews
Sisters. The
phrase itself literally means to give prominence to or emphasize something positive, constructive, etc.