i, Lear is a demonstration of what it is to be "only human". His judgement is often clouded by emotion - he often completely loses his objective view to his subjectivity. Lear's character is particularly prone to such flaws, eventually (and inevitably) resulting in problems for himself and others.
In Lear's first speech of the scene, in which he conveys his "darker purpose", he initially appears slightly pretentious and theatrical. For example he tends to be somewhat over elaborate in speech, describing France and Burgundy's stay in his court as an "amorous sojourn" and using theatrical pauses in his speech: "Tell me, my daughters-". This impression was not then discarded as he reinforces it using similar pauses in later conversation: "-What says our second daughter- and "-But now our joy-. He also continues with his slightly pompous speech, rambling about "mysteries of Hecate" and "sacred radiance" while working himself into a frenzy and disappearing into the mass of his own ego. He seems also to have a penchant for melodrama, speaking in a slightly strange fashion - for example: "Here I give her father's heart from her" In a way that is clearly designed by Lear for its impact upon his audience.
As the scene progresses it becomes clear that this behaviour is all a product of certain ingrained aspects of Lear's nature. Lear appears proud, having an inability to admit or rectify his own mistakes - almost immediately after his removal of his only loyal daughter's dowry he expresses his regard for his own decision, and his refusal to revoke it saying that he has "sworn" and will remain "firm". His reactions are also extreme and rash, not only does he cut-off his only genuine daughter but banishes a most loyal and devoted member of the court for trying to support his daughter and descenting upon his [Lear's] actions - Kent who refuses to be silenced is subjected to a barrage of insults such as "recreant", "miscreant" and "vassal".