The Oneness of Mankind...
"It is not for him to pride himself who loveth his own country, but rather for him who loveth the whole world. The earth is but one country and mankind its citizens."
— Gleanings from the Writings of Bahá'u'lláh, p. 250.
The Oneness of Religion...
"All these divisions we see on all sides, all these disputes and opposition, are caused because men cling to ritual and outward observances, and forget the simple, underlying truth. It is the outward practices of religion that are so different, and it is they that cause disputes and enmity — while the reality is always the same, and one. The Reality is the Truth, and truth has no division. Truth is God's guidance, it is the light of the world, it is love, it is mercy. These attributes of truth are also human virtues inspired by the Holy Spirit."
— ‘Abdu'l-Bahá, Paris Talks, pp. 120-1.
Independent Investigation of Truth...
"Furthermore, know ye that God has created in man the power of reason, whereby man is enabled to investigate reality. God has not intended man to imitate blindly his fathers and ancestors. He has endowed him with mind, or the faculty of reasoning, by the exercise of which he is to investigate and discover the truth, and that which he finds real and true he must accept."
— ‘Abdu'l-Bahá, The Promulgation of Universal Peace, p. 291.
Religion as a Source of Unity...
"He (Bahá'u'lláh) sets forth a new principle for this day in the announcement that religion must be the cause of unity, harmony and agreement among mankind. If it be the cause of discord and hostility, if it leads to separation and creates conflict, the absence of religion would be preferable in the world."
— ‘Abdu'l-Bahá, Bahá'í World Faith, p. 247.