In one of the initial pieces of information offered about Edmund, Gloucester tells Kent that Edmund has been away seeking his fortune, but he has now returned. Under English law, Edmund has no fortune at home, nor any entitlement. Edmund's return in search of family fortune provides the first hint that he will seize what English laws will not give him. Clearly, Edmund's actions are a result of his father's preference — both legal and filial — for Edgar, his older and legitimate son. This favoritism leads to Edmund's plan to destroy his father in an attempt to gain legitimacy and Gloucester's estate. Again, the natural order of family is ignored.
Gloucester rejects natural law and a parent's love for his child when he is easily convinced that Edgar — the son he claims to love so much — has betrayed him. Gloucester also puts his faith in Edmund's command of persuasive language, when he rejects the love his eldest son has always shown him. With this move, the earl demonstrates that he can be swayed by eloquence, a man-made construct for easy persuasion, which causes him to reject natural law and the bond between father and child.
Edmund both ignores and embraces natural law. By betraying his father to Cornwall and Regan, Edmund's self-serving course of action abandons nature's order and instead foreshadows the neo-Darwinist argument for survival of the strongest individual. His ability to survive and win is not based on competitive strategies or healthy family relationships; instead, Edmund will take what he desires by deceiving those who trust and love him.
