The absence of peace is one of the greatest threats to the continued existence of life on this planet. This paper uses the definition of peace given by the General Conference of UNESCO at its 18th session, whereby peace is seen as a process, not an event. Education is vital to eliminating prejudice, which is the foundation of injustice, disunity, and war. The four main causes of prejudice/injustice/disunity/war are: (1) self-centeredness, (2) passion, (3) lack of morals, and (4) blind imitation. These lead to five prejudices/injustices/disunities that are the most potent causes of war: (1) racism, (2) sexism, (3) nationalism, (4) classism, and (5) religionism. Education is the primary and most effective means for eliminating prejudice, injustice, and disunity. Teachers must first recognize and attempt to eliminate their own personal prejudices, then introduce the scientific knowledge that presently exists to support the concept of the oneness and nonviolent nature of humankind. They should attempt to develop the emotional, social, and moral atmosphere necessary for translating this knowledge into practice. Establishing peace in the world is primarily a process of changing how we think about peace which will affect how we feel about peace, and ultimately guide our actions in creating peace. A 17-item bibliography is included. (Author/JB)