You should respect each other and refrain from disputes; you should not, like water and oil, repel each other, but should, like milk and water, mingle together.
Whether we consider the individual, family, local, national or international level, peace must arise from inner peace. For example, making prayers for peace while continuing to harbor anger is futile. Training the mind and overcoming your anger is much more effective than mere prayer. Anger, hatred and jealousy never solve problems, only affection, concern and respect can do that.
Familiarity breeds contempt. How accurate that is. The reason we hold truth in such respect is because we have so little opportunity to get familiar with it.