"Short and stocky, plain-faced, he seemed a decent lad, sober, sensible, dutiful … but not the sort to make a young girl’s heart beat faster. And Daenerys Targaryen, whatever else she might be, was still a young girl, as she herself would claim when it pleased her to play the innocent. Like all good queens she put her people first—else she would never have wed Hizdahr zo Loraq—but the girl in her still yearned for poetry, passion, and laughter. She wants fire, and Dorne sent her mud.
You could make a poultice out of mud to cool a fever. You could plant seeds in mud and grow a crop to feed your children. Mud would nourish you, where fire would only consume you, but fools and children and young girls would choose fire every time."
--- A Dance with Dragons / A Song of Sex and Blood