Mistral’s works, both in verse and prose, deal with the basic passion of love as seen in the various relationships of mother and offspring, man and woman, individual and humankind, soul and God.
A dedicated educator and an engaged and committed intellectual, Mistral defended the rights of children, women, and the poor; the freedoms of democracy; and the need for peace in times of social, political, and ideological conflicts, not only in Latin America but in the whole world. She always took the side of those who were mistreated by society: children, women, Native Americans, Jews, war victims, workers, and the poor, and she tried to speak for them through her poetry, her many newspaper articles, her letters, and her talks and actions as Chilean representative in international organizations.
Source: http://www.poetryfoundation.org/bio/gabriela-mistral