To what does haimon appeal in his attempt to save antigone

Haemon tells his father that the people of Thebes sympathize with Antigone - and that even though he agrees with his father, the will of the people should be honored. Haemon says that even though he would never question his father's leadership and agrees with the philosophy of his rule, he should also be open to other points of view. Haemon is appealing to his father's pride and concern for appearances.