World order can be founded only on an unshakeable consciousness of the oneness of mankind, a spiritual truth which all the human sciences confirm. Anthropology, physiology, psychology, recognize only one human species, albeit infinitely varied in the secondary aspects of life. Recognition of this truth requires abandonment of prejudice—prejudice of every kind—race, class, colour, creed, nation, sex, degree of material civilization, everything which enables people to consider themselves superior to others. Acceptance of the oneness of mankind is the first fundamental prerequisite for reorganization and administration of the world as one country, the home of humankind. Universal acceptance of this spiritual principle is essential to any successful attempt to establish world peace. It should therefore be universally proclaimed, taught in schools, and constantly asserted in every nation as preparation for the organic change in the structure of society which it implies. In the Bahá’í view, recognition of the oneness of mankind “calls for no less than the reconstruction and the demilitarization of the whole civilized world—a world organically unified in all the essential aspects of its life, its political machinery, its spiritual aspiration, its trade and finance, its script and language, and yet infinite in the diversity of the national characteristics of its federated units.” Elaborating the implications of this pivotal principle, Shoghi Effendi, the Guardian of the Bahá’í Faith, commented in 1931 that: “Far from aiming at the subversion of the existing foundations of society, it seeks to broaden its basis, to remold its institutions in a manner consonant with the needs of an ever-changing world. It can conflict with no legitimate allegiances, nor can it undermine essential loyalties. Its purpose is neither to stifle the flame of a sane and intelligent patriotism in men’s hearts, nor to abolish the system of national autonomy so essential if the evils of excessive centralization are to be avoided. It does not ignore, nor does it attempt to suppress, the diversity of ethnical origins, of climate, of history, of language and tradition, of thought and habit, that differentiate the peoples and nations of the world. It calls for a wider loyalty, for a larger aspiration than any that has animated the human race. It insists upon the subordination of national impulses and interests to the imperative claims of a unified world. It repudiates excessive centralization on one hand, and disclaims all attempts at uniformity on the other. Its watchword is unity in diversity”.