“When the crying child is immediately isolated, and it is explained to him at the same time that whoever annoys others must not be with them, if this isolation is the absolute result and cannot be avoided, in the child's mind a basis is laid for the experience that one must be alone when one makes oneself unpleasant or disagreeable.”

Swedish writer and social thinker

Ellen Key was a Swedish writer and social thinker associated with the Modern Breakthrough movement. She lived from 1849 to 1926 and wrote on family life, ethics, education, and women's rights. She is especially remembered as an early advocate of child-centered education and parenting. Her work also placed her among the women’s suffrage advocates of her time, and her writing often returned to questions of home, moral life, and how society should shape the next generation.