1. Bahá'u'lláh, Gleanings from the Writings of Bahá'u'lláh, pp.162-63.
2. From a letter dated February 9, 1937 written on behalf of Shoghi Effendi to an individual believer, cited in Lights of Guidance, 3rd revised edition, edited Helen B. Hornby (Bahá'í Publishing Trust: New Delhi, 1994), p.479.
3. Bahá'u'lláh, Gleanings from the Writings of Bahá'u'lláh, p.104.
4. From a letter dated March 31, 1949, written on behalf of the Guardian to an individual believer, cited in McCulloch, Kenneth C, Mankind: Citizen of the Galaxy (Rings of Saturn Publishing: The Pas, 1985), p.238.
5. 'Abdu'l-Bahá quoted in "Divine Philosophy" (Boston: The Tudor Press, 1918), pp.114-15.
6. "Dabbatun: beasts, living, crawling creatures of all kinds. Similarly in Qur'án 2:45, and other passages, the word is used for living creatures of all kinds, life generally, whose material basis is the mysterious thing which science calls protoplasm. The more our biological knowledges increases, the more do we marvel at the unity of Life on the one hand, and its diversity on the other." Footnote 4568, edited, 'Abdullah Yusuf 'Alí, The Meaning of The Holy Qur'án, (Amana Corporation: Maryland, 1993).
7. "Life is not confined to our one little Planet. It is a very old speculation to imagine some life like human life on the planet Mars. Though no scientific demonstration is possible, it is reasonable to suppose that Life in some form or other is scattered through some of the millions of heavenly bodies scattered through space. What a wonderful Sign of Allah! the Almighty Who created such countless beings has surely the power to bring them together." Footnote 4569, 'Abdullah Yusuf 'Alí, The Meaning of The Holy Qur'án, (Amana Corporation: Maryland, 1993).
8. Qur'án 42:29, Al Shura, "Consultation", 'Abdullah Yusuf 'Alí translation.