How does ‘Abdu’l-Bahá use the symbol of “Adam” and how does he argue that symbol be used as a key to the establishment of world peace? Attribute and cite with textual support.
Answer: ‘Abdu’l-Bahá states that "Adam’s sin was not the sin of His Posterity" (Abdu’l-Bahá, 1981). Adam is a great symbol, which is an indication of the oneness between the past and the present. The symbol of “Adam” is the symbol of the world of freedom and the Kingdom of Unity in the human world, in other words, a key to the establishment of world peace (‘Abdu’l-Bahá, n.d.).