“I don't know the key to success, but the key to failure is trying to please everybody.”
Bill Cosby (1937) American actor, comedian, author, producer, musician, activist
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
Misattributed