If a day goes by that don't change some of your old notions for new ones, that is just about like trying to milk a dead cow.
Source: In The Ultimate Success Quotations Library, 1997.
-- Woody Guthrie, (Jul 14 1912-1967), US folksinger, songwriter, balladeer; He wrote over 1000 songs, 1930s-40s including, This Land is Your Land, 1956; inducted into the Hall of Fame, 1988.