…the human embryo assumes different conditions and traverses numerous stages until it reaches that form in which it manifests the reality of the words “Hallowed be the Lord, the most excellent of all creators!” and shows forth the signs of full development and maturity. In like manner, from the beginning of man’s existence on this planet until he assumed his present shape, form, and condition, a long time must have elapsed, and he must have traversed many stages before reaching his present condition. But from the beginning of his existence man has been a distinct species. This is similar to the embryo of man in the womb of the mother: It possesses at first a strange appearance; then this body passes from shape to shape and from form to form until it appears in the utmost beauty and perfection. But even when it possesses, in the womb of the mother, a strange form entirely different from its present shape and appearance, it is the embryo of a distinct species and not of an animal: The essence of the species and the innate reality undergo no transformation at all.
- ‘Abdu’l-Baha (Table talks in Akka, authenticated by ‘Abdu’l-Baha; ‘Some Answered Questions’ – 2014 revised translation by the Baha’i World Centre)