... the Bahá'í Writings affirm that the human soul comes into being at the time of conception. However, they do not clearly define the exact biological moment and nature of the event described as conception and this may, indeed, be a question that is insoluble by human thought or investigation, since it relates to mysteries of the spiritual world and the nature of the soul itself.
- The Universal House of Justice (From a letter dated 6 February 1997 written on behalf of the Universal House of Justice to a National Spiritual Assembly; compilation ‘Reproduction and other Biological Subjects ‘, prepared by the Research Department of the Universal House of Justice)