During the 1930s, as war clouds gathered over Europe, Maria Montessori became profoundly concerned the question of peace. The problem of the war caused her to engage in a passionate search for new human truths. Taking as her starting point her conviction that the child must be our teacher, she moved on to consider the problems of human and social development and began a crusade in the name of the education. “Establishing a lasting peace is the work of education… all politics can do is keep us at war”. This collection of speeches, delivered by Maria Montessori at international congresses and peace councils, vividly reveals why she was proposed as a candidate for the Nobel Peace Prize. Today her philosophy of peace is still the value in a constantly changing and unstable world.