A compilation of 139 talks and discourses given by ‘Abdu’l-Bahá during His travels in North America, which explore the fundamental principles of the Bahá’í Faith.

The Promulgation of Universal Peace can be read in full at the Bahá’í Reference Library. Some extracts are shared below.

Service to humanity is service to God. Let the love and light of the Kingdom radiate through you until all who look upon you shall be illumined by its reflection. Be as stars, brilliant and sparkling in the loftiness of their heavenly station. Do you appreciate the Day in which you live?

These are the days of seed sowing. These are the days of tree planting. The bountiful bestowals of God are successive. He who sows a seed in this day will behold his reward in the fruits and harvest of the heavenly Kingdom. This timely seed, when planted in the hearts of the beloved of God, will be watered by showers of divine mercy and warmed by the sunshine of divine love. Its fruitage and flower shall be the solidarity of mankind, the perfection of justice and the praiseworthy attributes of heaven manifest in humanity. All who sow such a seed and plant such a tree according to the teachings of Bahá’u’lláh shall surely witness this divine outcome in the degrees of its perfection and will attain unto the good pleasure of the Merciful One.

Today the nations of the world are self-engaged, occupied with mortal and transitory accomplishments, consumed by the fires of passion and self. Self is dominant; enmity and animosity prevail. Nations and peoples are thinking only of their worldly interests and outcomes. The clash of war and din of strife are heard among them. But the friends of the Blessed Perfection have no thoughts save the thoughts of heaven and the love of God. Therefore, you must without delay employ your powers in spreading the effulgent glow of the love of God and so order your lives that you may be known and seen as examples of its radiance. You must deal with all in loving-kindness in order that this precious seed entrusted to your planting may continue to grow and bring forth its perfect fruit. The love and mercy of God will accomplish this through you if you have love in your own heart.

The doors of the Kingdom are opened. The lights of the Sun of Truth are shining. The clouds of divine mercy are raining down their priceless jewels. The zephyrs of a new and divine springtime are wafting their fragrant breaths from the invisible world. Know ye then the value of these days.

Awake ye to the realization of this heavenly opportunity. Strive with all the power of your souls, your deeds, actions and words to assist the spread of these glad tidings and the descent of this merciful bounty. You are the reality and expression of your deeds and actions. If you abide by the precepts and teachings of the Blessed Perfection, the heavenly world and ancient Kingdom will be yours—eternal happiness, love and everlasting life. The divine bounties are flowing. Each one of you has been given the opportunity of becoming a tree yielding abundant fruits. This is the springtime of Bahá’u’lláh. The verdure and foliage of spiritual growth are appearing in great abundance in the gardens of human hearts. Know ye the value of these passing days and vanishing nights. Strive to attain a station of absolute love one toward another. By the absence of love, enmity increases. By the exercise of love, love strengthens and enmities dwindle away.

The light of the sun becomes apparent in each object according to the capacity of that object. The difference is simply one of degree and receptivity. The stone would be a recipient only to a limited extent; another created thing might be as a mirror wherein the sun is fully reflected; but the same light shines upon both.

The most important thing is to polish the mirrors of hearts in order that they may become illumined and receptive of the divine light. One heart may possess the capacity of the polished mirror; another, be covered and obscured by the dust and dross of this world. Although the same Sun is shining upon both, in the mirror which is polished, pure and sanctified you may behold the Sun in all its fullness, glory and power, revealing its majesty and effulgence; but in the mirror which is rusted and obscured there is no capacity for reflection, although so far as the Sun itself is concerned it is shining thereon and is neither lessened nor deprived. Therefore, our duty lies in seeking to polish the mirrors of our hearts in order that we shall become reflectors of that light and recipients of the divine bounties which may be fully revealed through them.

In this Cause consultation is of vital importance, but spiritual conference and not the mere voicing of personal views is intended. In France I was present at a session of the senate, but the experience was not impressive. Parliamentary procedure should have for its object the attainment of the light of truth upon questions presented and not furnish a battleground for opposition and self-opinion. Antagonism and contradiction are unfortunate and always destructive to truth. In the parliamentary meeting mentioned, altercation and useless quibbling were frequent; the result, mostly confusion and turmoil; even in one instance a physical encounter took place between two members. It was not consultation but comedy.

The purpose is to emphasize the statement that consultation must have for its object the investigation of truth. He who expresses an opinion should not voice it as correct and right but set it forth as a contribution to the consensus of opinion, for the light of reality becomes apparent when two opinions coincide. A spark is produced when flint and steel come together. Man should weigh his opinions with the utmost serenity, calmness and composure. Before expressing his own views he should carefully consider the views already advanced by others. If he finds that a previously expressed opinion is more true and worthy, he should accept it immediately and not willfully hold to an opinion of his own. By this excellent method he endeavors to arrive at unity and truth. Opposition and division are deplorable. It is better then to have the opinion of a wise, sagacious man; otherwise, contradiction and altercation, in which varied and divergent views are presented, will make it necessary for a judicial body to render decision upon the question. Even a majority opinion or consensus may be incorrect. A thousand people may hold to one view and be mistaken, whereas one sagacious person may be right. Therefore, true consultation is spiritual conference in the attitude and atmosphere of love. Members must love each other in the spirit of fellowship in order that good results may be forthcoming. Love and fellowship are the foundation.

The divine religions were founded for the purpose of unifying humanity and establishing universal peace. Any movement which brings about peace and agreement in human society is truly a divine movement; any reform which causes people to come together under the shelter of the same tabernacle is surely animated by heavenly motives. At all times and in all ages of the world, religion has been a factor in cementing together the hearts of men and in uniting various and divergent creeds. It is the peace element in religion that blends mankind and makes for unity. Warfare has ever been the cause of separation, disunion and discord.

Scientific knowledge is the highest attainment upon the human plane, for science is the discoverer of realities. It is of two kinds: material and spiritual. Material science is the investigation of natural phenomena; divine science is the discovery and realization of spiritual verities. The world of humanity must acquire both. A bird has two wings; it cannot fly with one. Material and spiritual science are the two wings of human uplift and attainment. Both are necessary—one the natural, the other supernatural; one material, the other divine. By the divine we mean the discovery of the mysteries of God, the comprehension of spiritual realities, the wisdom of God, inner significances of the heavenly religions and foundation of the law.

Creation is the expression of motion. Motion is life. A moving object is a living object, whereas that which is motionless and inert is as dead. All created forms are progressive in their planes, or kingdoms of existence, under the stimulus of the power or spirit of life. The universal energy is dynamic. Nothing is stationary in the material world of outer phenomena or in the inner world of intellect and consciousness.

Religion is the outer expression of the divine reality. Therefore, it must be living, vitalized, moving and progressive. If it be without motion and nonprogressive, it is without the divine life; it is dead. The divine institutes are continuously active and evolutionary; therefore, the revelation of them must be progressive and continuous. All things are subject to reformation. This is a century of life and renewal. Sciences and arts, industry and invention have been reformed. Law and ethics have been reconstituted, reorganized. The world of thought has been regenerated. Sciences of former ages and philosophies of the past are useless today. Present exigencies demand new methods of solution; world problems are without precedent. Old ideas and modes of thought are fast becoming obsolete. Ancient laws and archaic ethical systems will not meet the requirements of modern conditions, for this is clearly the century of a new life, the century of the revelation of reality and, therefore, the greatest of all centuries. Consider how the scientific developments of fifty years have surpassed and eclipsed the knowledge and achievements of all the former ages combined. Would the announcements and theories of ancient astronomers explain our present knowledge of the suns and planetary systems? Would the mask of obscurity which beclouded medieval centuries meet the demand for clear-eyed vision and understanding which characterizes the world today? Will the despotism of former governments answer the call for freedom which has risen from the heart of humanity in this cycle of illumination? It is evident that no vital results are now forthcoming from the customs, institutions and standpoints of the past. In view of this, shall blind imitations of ancestral forms and theological interpretations continue to guide and control the religious life and spiritual development of humanity today? Shall man, gifted with the power of reason, unthinkingly follow and adhere to dogma, creeds and hereditary beliefs which will not bear the analysis of reason in this century of effulgent reality? Unquestionably this will not satisfy men of science, for when they find premise or conclusion contrary to present standards of proof and without real foundation, they reject that which has been formerly accepted as standard and correct and move forward from new foundations.

The divine Prophets have revealed and founded religion. They have laid down certain laws and heavenly principles for the guidance of mankind. They have taught and promulgated the knowledge of God, established praiseworthy ethical ideals and inculcated the highest standards of virtues in the human world. Gradually these heavenly teachings and foundations of reality have been beclouded by human interpretations and dogmatic imitations of ancestral beliefs. The essential realities, which the Prophets labored so hard to establish in human hearts and minds while undergoing ordeals and suffering tortures of persecution, have now well nigh vanished. Some of these heavenly Messengers have been killed, some imprisoned, all of Them despised and rejected while proclaiming the reality of Divinity. Soon after Their departure from this world, the essential truth of Their teachings was lost sight of and dogmatic imitations adhered to.

Inasmuch as human interpretations and blind imitations differ widely, religious strife and disagreement have arisen among mankind, the light of true religion has been extinguished and the unity of the world of humanity destroyed. The Prophets of God voiced the spirit of unity and agreement. They have been the Founders of divine reality. Therefore, if the nations of the world forsake imitations and investigate the reality underlying the revealed Word of God, they will agree and become reconciled. For reality is one and not multiple.

You must manifest complete love and affection toward all mankind. Do not exalt yourselves above others, but consider all as your equals, recognizing them as the servants of one God. Know that God is compassionate toward all; therefore, love all from the depths of your hearts, prefer all religionists before yourselves, be filled with love for every race, and be kind toward the people of all nationalities. Never speak disparagingly of others, but praise without distinction. Pollute not your tongues by speaking evil of another. Recognize your enemies as friends, and consider those who wish you evil as the wishers of good. You must not see evil as evil and then compromise with your opinion, for to treat in a smooth, kindly way one whom you consider evil or an enemy is hypocrisy, and this is not worthy or allowable. You must consider your enemies as your friends, look upon your evil-wishers as your well-wishers and treat them accordingly. Act in such a way that your heart may be free from hatred. Let not your heart be offended with anyone. If someone commits an error and wrong toward you, you must instantly forgive him. Do not complain of others. Refrain from reprimanding them, and if you wish to give admonition or advice, let it be offered in such a way that it will not burden the bearer. Turn all your thoughts toward bringing joy to hearts. Beware! Beware! lest ye offend any heart. Assist the world of humanity as much as possible. Be the source of consolation to every sad one, assist every weak one, be helpful to every indigent one, care for every sick one, be the cause of glorification to every lowly one, and shelter those who are overshadowed by fear.

In brief, let each one of you be as a lamp shining forth with the light of the virtues of the world of humanity. Be trustworthy, sincere, affectionate and replete with chastity. Be illumined, be spiritual, be divine, be glorious, be quickened of God, be a Bahá’í.