All work and no play makes Jack a dull boy -- a Jill a rich widow.
Source: In Webster's Electronic Quotebase, ed. Keith Mohler, 1994.
-- Evan Esar, (?? 1899-1995), Us humorist; He wrote Esar's Comic Dictionary in 1943, Humorous English in 1961, and 20,000 Quips and Quotes in 1968.