When Leonato tells Beatrice that he would like to see her married one day, she says that, that would never happen because she would never marry a man made of flesh and blood. For her to many, men have to be made of some other metal and not earth. She continues to say that it would be a disgrace for her to be governed by a piece of dust however brave he might be and to give an account of her life to a husband made out of useless piece of earth. Finally, Beatrice says that she considers all of Adam's sons as her brothers and it would be a sin to marry her own brother.