"Universalism :Science of Peace and Harmony" studies the human society and everything that happens within it from and objective perspective. Human evolution has been characterized by violence and destruction, and this poses a serious threat to human existence. Here, we attempt an accurate diagnosis of the human problem, that causes man to operate like an evil creature in the world. Universalism helps us to see the magnitude of the human capacity to build a peaceful and United world. The goal of this book is to show a pattern through which humanity can find lasting peace and harmony in the world. In the same way that we stratégie in order to accomplish various tasks in the world, the project to make the world a peaceful and harmonious place where everyone flourishes needs to be handled with care and expertise. The mistakes we have made in the past, and which continues to hamper our progress today has been to adopt a rather superficial and speculative approach to the notions of peace and harmony. Universalism upholds the ideology that peace and harmony are products of human endeavors, and man struggles to create better conditions for his survival. It is thus our responsibility as human beings to use to best approach to attain this goal. The multiplicity of conflicts in the world is mostly due to lfailure to pursue a genuine project of Peace and Harmony. Universalism :Science of Peace and Harmony is entirely focused on this project, as it shows us how we can develop our intelligect to truly operate as rational creatures in the world. At this point in time, when violence and all forms of vice have become omnipresent in the world, it is crucial that we adopt the best strategy to heal our dying world. Failure to do this will definitely seal our fate, and that of our descendants. Embarking on the project of Humanism is actually the only way out of the chaos that reigns in the world right now.