I don't know the key to success, but the key to failure is trying to please everybody.
Originally from Herbert Bayard Swope (1882-1958); often attributed to Cosby, he actually cites this as a sound advice he once read elsewhere, in "Dr. Bill Cosby" in Ebony, Vol. 32, No. 8 (June 1977, p. 136).
My father walked to school 4 o'clock every morning with no shoes on, uphill, both ways, in 5 feet of snow and he was thankful.Bill Cosby
The very first law in advertising is to avoid the concrete promise and cultivate the delightfully vague.Bill Cosby