Leonidas was thus left to reign alone, the first time such a thing had happened in Sparta.  As poor Agiatis was a rich heiress, he kept her in his house, and married her to his son Cleomenes, a mere boy, much younger than herself.  She was the fairest and wisest woman in Greece; and though she always was cold, grave, and stern towards the wicked old king, she loved his wife, and was gentle towards the young boy, who was blameless of his father’s sin, and gave her all his heart for his whole life.  He cared for nothing so much as to hear from her of Agis, his brave, self-denying ways, and noble plans; and thus did they live, after the untimely death of Agis, strengthened by the study of the Stoic philosophy, which taught that virtue was the highest good, and that no suffering, not even death, was to be shunned in pursuit of her.