The spiritual world is the counterpart of the material world

The spiritual world is like unto the phenomenal world. They are the exact counterpart of each other. Whatever objects appear in this world of existence are the outer pictures of the world of heaven. 

- ‘Abdu’l-Baha  (From a talk; The Promulgation of Universal Peace)

The power that is bringing peoples from the East and West together

The Báb and Bahá'u'lláh over sixty years ago proclaimed the glad tidings of universal peace. The Báb was martyred in the Cause of God. Bahá'u'lláh suffered forty years as a prisoner and exile in order that the Kingdom of love might be established in the East and West. He has made it possible for us to meet here in love and unity. Because He suffered imprisonment, we are free to proclaim the oneness of the world of humanity for which He stood so long and faithfully. He was chained in dungeons, He was without food, His companions were thieves and criminals, He was subjected to every kind of abuse and infliction, but throughout it all He never ceased to proclaim the reality of the Word of God and the oneness of humanity. We have been brought together here by the power of His Word -- you from America, I from Persia -- all in love and unity of spirit. Was this possible in former centuries? If it is possible now after fifty years of sacrifice and teaching, what shall we expect in the wonderful centuries coming?
- Abdu'l-Baha  (From a talk; The Promulgation of Universal Peace)

One's faith embodies three degrees

"In reality, faith embodies three degrees: to confess with the tongue; to believe in the heart; to give evidence in our actions." 

- ‘Abdu’l-Baha  (quoted in The Baha'i World vol.6 1934-1936)

Purpose of Religion

Religion should be the means of good fellowship and love. It must upraise the standard of harmony and solidarity. If religion is conducive to hatred and enmity, its existence is harmful to the welfare of the community. 

- 'Abdu'l-Baha  (Divine Philosophy)

Mission of All Divine Prophets

The divine Prophets came to establish the unity of the Kingdom in human hearts. All of them proclaimed the glad tidings of the divine bestowals to the world of mankind. All brought the same message of divine love to the world. 

- ‘Abdu’l-Baha  (From a talk; The Promulgation of Universal Peace)

How a Meeting can Attract Divine Bounties

… the affinity and love manifest in this meeting, the divine susceptibilities witnessed here are not of this world but of the world of the Kingdom. When the souls become separated and selfish, the divine bounties do not descend, and the lights of the Supreme Concourse are no longer reflected even though the bodies meet together. A mirror with its back turned to the sun has no power to reflect the sun's effulgence.
- 'Abdu'l-Baha  (From a talk; The Promulgation of Universal Peace)

Attributes of the Spiritual World

… the spiritual world … is the Kingdom of complete attraction and affinity. It is the Kingdom of the One Divine Spirit, the Kingdom of God.
- ‘Abdu’l-Baha  (From a talk; The Promulgation of Universal Peace)

Purpose of Man’s Creation

The purpose of the creation of man is the attainment of the supreme virtues of humanity through descent of the heavenly bestowals. The purpose of man's creation is, therefore, unity and harmony, not discord and separateness. If the atoms which compose the kingdom of the minerals were without affinity for each other, the earth would never have been formed, the universe could not have been created. Because they have affinity for each other, the power of life is able to manifest itself, and the organisms of the phenomenal world become possible. When this attraction or atomic affinity is destroyed, the power of life ceases to manifest; death and nonexistence result. 

- 'Abdu'l-Baha (From a talk; The Promulgation of Universal Peace)