"It is the one foundation of all the religions of God. Therefore, the religions are essentially one and the same."

"In further consideration of this subject, I wish you to be fair and reasonable in your judgment, setting aside all religious prejudices. We should earnestly seek and thoroughly investigate realities, recognizing that the purpose of the religion of God is the education of humanity and the unity and fellowship of mankind. Furthermore, we will establish the point that the foundations of the religions of God are one foundation. This foundation is not multiple, for it is reality itself. Reality does not admit of multiplicity, although each of the divine religions is separable into two divisions. One concerns the world of morality and the ethical training of human nature. It is directed to the advancement of the world of humanity in general; it reveals and inculcates the knowledge of God and makes possible the discovery of the verities of life. This is ideal and spiritual teaching, the essential quality of divine religion, and not subject to change or transformation. It is the one foundation of all the religions of God. Therefore, the religions are essentially one and the same."

`Abdu'l-Bahá, The Promulgation of Universal Peace, pp. 364-365

12 October 1912 
(excerpt from) Talk at Temple Emmanu-El 
450 Sutter Street, 
San Francisco, California

Michelangelo