Original sentence: Since 1972, the UNCF motto has been "A mind is a terrible thing to waste" and has become one of the most widely recognized slogans in advertising history.The motto has been used in award-winning UNCF ad campaigns and was created by Forest Long of the advertising agency Young & Rubicam
Edited sentence: " This maxim has become one of the most widely recognized slogans in advertising history.In 1972, the UNCF adopted, as its motto, the maxim, "A mind is a terrible thing to waste.The motto, which has been used in numerous award-winning UNCF ad campaigns, was created by Forest Long, of the advertising agency Young & Rubicam