For every era hath a spirit; the spirit of this illumined era lieth in the teachings of Bahá'u'lláh. For these lay the foundation of the oneness of the world of humanity and promulgate universal brotherhood. They are founded upon the unity of science and religion and upon investigation of truth. They uphold the principle that religion must be the cause of amity, union and harmony among men. They establish the equality of both sexes and propound economic principles which are for the happiness of individuals. They diffuse universal education, that every soul may as much as possible have a share of knowledge. They abrogate and nullify religious, racial, political, patriotic and economic prejudices and the like. Those teachings that are scattered throughout the Epistles and Tablets are the cause of the illumination and the life of the world of humanity.
Let there be no mistake. The principle of the Oneness of Mankind – the pivot round which all the teachings of Bahá'u'lláh revolve – is no mere outburst of ignorant emotionalism or an expression of vague and pious hope. Its appeal is not to be merely identified with a reawakening of the spirit of brotherhood and goodwill among men, nor does it aim solely at the fostering of harmonious co-operation among individual peoples and nations. Its implications are deeper, its claims greater than any which the Prophets of old were allowed to advance. Its message is applicable not only to the individual, but concerns itself primarily with the nature of those essential relationships that must bind all the states and nations as members of one human family. It does not constitute merely the enunciation of an ideal, but stands inseparably associated with an institution adequate to embody its truth, demonstrate its validity, and perpetuate its influence. It implies an organic change in the structure of present-day society, a change such as the world has not yet experienced. It constitutes a challenge, at once bold and universal, to outworn shibboleths of national creeds–creeds that have had their day and which must, in the ordinary course of events as shaped and controlled by Providence, give way to a new gospel, fundamentally different from, and infinitely superior to, what the world has already conceived. It 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. ...
One day of days We repaired unto Our Green Island. Upon Our arrival, We beheld its streams 
The fourth Taráz concerneth trustworthiness. Verily it is the door of security for all that dwell on earth and a token of glory on the part of the All-Merciful. He who partaketh thereof hath indeed partaken of the treasures of wealth and prosperity....
Across the world are to be gathered, in scores of youth conferences
sharing the same aim, tens of thousands who have much in common. Although your
realities are shaped by a broad diversity of circumstances, yet a desire to
bring about constructive change and a capacity for meaningful service, both
characteristic of your stage of life, are neither limited to any race or
nationality, nor dependent upon material means. This bright period of youth
you share is experienced by all--but it is brief, and buffeted by numerous
social forces. How important it is, then, to strive to be among those who, in
the words of 'Abdu'l-Baha, "plucked the fruit of life"....
Among the teachings of Baha'u'llah is one relative to the abolition of fanaticism that is based upon ignorance. Such fanaticism is destructive of the basis of humanity; it is a veil obscuring man's vision and preventing him from seeing reality aright, hindering him from seeking the spiritual development to which he should aspire and thereby attaining to the sublime virtues characterizing perfect manhood. The veils of such prejudice must be rent asunder in order that the light of reality may shine forth gloriously. So long as the world of humanity continues to be controlled by baseless prejudice it day by day becomes more degraded, more steeped in ignorance, until at last the human eye becomes as blind, the human ear as deaf, the human spirit as dead, and man becomes bereft of all the favors. But if this veil of prejudice and fanaticism should be rent asunder, then the light of reality would become effulgent. The light of reality is one, and it is the foundation of all the divine religions.
And among the teachings of Bahá’u’lláh is one relative to the fact that God has created man to yield some fruit from his being, or existence, an eternal fruit an everlasting result. If the world of humanity be confined to the short space of material life here, if man should devote his energies to temporary results for the life of this world is short, the blessings of this world are temporary, the verdures of the world of nature are temporary the happiness of the world of nature is temporary this cannot be called fruitage, because it is temporary and hence useless. Nay, rather, man, must be a blessed tree bearing eternal fruits Thus everlasting spirituality may be his.
The first and foremost duty prescribed unto men, next to the recognition of Him Who is the Eternal Truth, is the duty of steadfastness in His Cause. Cleave thou unto it, and be of them whose minds are firmly fixed and grounded in God. No act, however meritorious, did or can ever compare unto it. It is the king of all acts, and to this thy Lord, the All-Highest, the Most Powerful, will testify….Man’s highest station, however, is attained through faith in God in every Dispensation and by acceptance of what hath been revealed by Him...
