A theme of Cliff Barnes' character was social class conflict with his nemesis J.R. Ewing. Cliff had grown up poor in contrast to J.R. after the partnership between Cliff's father Digger and Jock Ewing dissolved, due in large part to Digger's heavy drinking. Jock went on to found Ewing Oil. Digger blamed Jock for his subsequent bad luck and was jealous of Jock's wealth. Cliff inherited Digger's resentment of the Ewings, and as well as the tendency to sometimes drink heavily. As time went on his hatred for the Ewings (with the exception of J.R.) dissipated, as Cliff realized that his father was not blameless in regards to the Barnes-Ewing feud. Throughout the series Cliff had a reputation for being cheap and naive in contrast to J.R. Whereas J.R. always dined in fine restaurants, wore a stylish Stetson, lived on Southfork and lavished his mistresses with generosity; Cliff often preferred take-out Chinese cuisine, wore cheap suits, lived in a condominium and assumed his romantic interests would clean his home. While J.R. was smooth talking and charismatic, Cliff tended to speak before he thought and frequently stuck his foot in his mouth. Much of the drama of Dallas was centered around Cliff's attempts to revenge himself against J.R. politically, romantically and financially. Typically, Cliff's schemes failed because of J.R.'s under-handed cleverness.
