I believe that history is made by people like you and me. That means that "peace is in our hands," which was the slogan of the United Nations International Year for the Culture of Peace (2000), of which I was the director. To learn how this could be possible, I undertook the study presented here in Psychology for Peace Activists which examines the lives of great peace activists, based primarily on their own autobiographies, in terms of a theory of consciousness development. Being American, I chose to study activists from American history. This was later expanded to include the important example of Nelson Mandela from South Africa. From this, I draw the conclusion that while the task is difficult, it is also possible, and we have much to learn from those who have gone before us. For this reason, I have given this little book the sub-title of "A New Psychology for the Generation Who Can Abolish War."