Originally, the Hulk was shown as simple minded and quick to anger. The Hulk generally divorces his identity from Banner's, decrying Banner as "puny Banner." From his earliest stories, the Hulk has been concerned with finding sanctuary and quiet and often is shown reacting emotionally to situations quickly. Grest and Weinberg call Hulk the "dark, primordial side of Banner's psyche." Even in the earliest appearances, Hulk spoke in the third person. Hulk retains a modest intelligence, thinking and talking in full sentences, and Lee even gives the Hulk expository dialogue in issue #6, allowing readers to learn just what capabilities Hulk has, when the Hulk says, "But these muscles ain't just for show! All I gotta do is spring up and just keep goin'!" In the 1970s, Hulk was shown as more prone to anger and rage, and less talkative. Writers played with the nature of his transformations, briefly giving Banner control over the change, and the ability to maintain control of his Hulk form. Artistically and conceptually, the character has become progressively more muscular and powerful in the years since his debut.