. . . the philosophers of the West have certain syllogisms, or demonstrations, whereby they endeavor to prove that man had his origin in the animal kingdom; that although he is now a vertebrate, he originally lived in the sea; from thence he was transferred to the land and became vertebrate; that gradually his feet and hands appeared in his anatomical development; then he began to walk upon all fours, after which he attained to human stature, walking erect. They find that his anatomy has undergone successive changes, finally assuming human form, and that these intermediate forms or changes are like links connected. Between man and the ape, however, there is one link missing, and to the present time scientists have not been able to discover it. Therefore, the greatest proof of this western theory of human evolution is anatomical, reasoning that there are certain vestiges of organs found in man which are peculiar to the ape and lower animals, and setting forth the conclusion that man at some time in his upward progression has possessed these organs which are no longer functioning but appear now as mere rudiments and vestiges.

For example, a serpent has a certain appendage which indicates that at one time it was possessed of long limbs, but as this creature began to find its habitation in the holes of the earth, these limbs, no longer needed, became atrophied and shrunk, leaving but a vestige, or appendage, as an evidence of the time when they were lengthy and serviceable. Likewise, it is claimed man had a certain appendage which shows that there was a time when his anatomical structure was different from his present organism and that there has been a corresponding transformation or change in that structure. The coccyx, or extremity of the human spinal column, is declared to be the vestige of a tail which man formerly possessed but which gradually disappeared when he walked erect and its utility ceased. These statements and demonstrations express the substance of western philosophy upon the question of human evolution.

The philosophers of the Orient in reply to those of the western world say: Let us suppose that the human anatomy was primordially different from its present form, that it was gradually transformed from one stage to another until it attained its present likeness, that at one time it was similar to a fish, later an invertebrate and finally human. This anatomical evolution or progression does not alter or affect the statement that the development of man was always human in type and biological in progression. For the human embryo when examined microscopically is at first a mere germ or worm. Gradually as it develops it shows certain divisions; rudiments of hands and feet appear -- that is to say, an upper and a lower part are distinguishable. Afterward it undergoes certain distinct changes until it reaches its actual human form and is born into this world. But at all times, even when the embryo resembled a worm, it was human in potentiality and character, not animal. The forms assumed by the human embryo in its successive changes do not prove that it is animal in its essential character. Throughout this progression there has been a transference of type, a conservation of species or kind. Realizing this we may acknowledge the fact that at one time man was an inmate of the sea, at another period an invertebrate, then a vertebrate and finally a human being standing erect. Though we admit these changes, we cannot say man is an animal. In each one of these stages are signs and evidences of his human existence and destination. Proof of this lies in the fact that in the embryo man still resembles a worm. This embryo still progresses from one state to another, assuming different forms until that which was potential in it -- namely, the human image -- appears. Therefore, in the protoplasm, man is man. Conservation of species demands it.

‘Abdu’l-Bahá, The Promulgation of Universal Peace, p. 358-359

That is to say, the embryo passes through different states and traverses numerous degrees, until it reaches the form in which it manifests the words “Praise be to God, the best of Creators,” and until the signs of reason and maturity appear. And in the same way, man’s existence on this earth, from the beginning until it reaches this state, form and condition, necessarily lasts a long time, and goes through many degrees until it reaches this condition. But from the beginning of man’s existence he is a distinct species. In the same way, the embryo of man in the womb of the mother was at first in a strange form; then this body passes from shape to shape, from state to state, from form to form, until it appears in utmost beauty and perfection. But even when in the womb of the mother and in this strange form, entirely different from his present form and figure, he is the embryo of the superior species, and not of the animal; his species and essence undergo no change. Now, admitting that the traces of organs which have disappeared actually exist, this is not a proof of the impermanence and the nonoriginality of the species. At the most it proves that the form, and fashion, and the organs of man have progressed. Man was always a distinct species, a man, not an animal. So, if the embryo of man in the womb of the mother passes from one form to another so that the second form in no way resembles the first, is this a proof that the species has changed? that it was at first an animal, and that its organs progressed and developed until it became a man? No, indeed! How puerile and unfounded is this idea and this thought! For the proof of the originality of the human species, and of the permanency of the nature of man, is clear and evident.

‘Abdu’l-Bahá, Some Answered Questions, p. 183-184

The lost link of Darwinian theory is itself a proof that man is not an animal. How is it possible to have all the links present and that important link absent? Its absence is an indication that man has never been an animal. It will never be found.

‘Abdu’l-Bahá, The Promulgation of Universal Peace, p. 358-359

Thirdly, let us suppose that there was a time when some animals, or even man, possessed some members which have now disappeared; this is not a sufficient proof of the change and evolution of the species. For man, from the beginning of the embryonic period till he reaches the degree of maturity, goes through different forms and appearances. His aspect, his form, his appearance, and color change; he passes from one form to another, and from one appearance to another. Nevertheless, from the beginning of the embryonic period he is of the species of man; that is to say, an embryo of a man, and not of an animal; but this is not at first apparent, but later it becomes visible and evident. For example, let us suppose that man once resembled the animal, and that now he has progressed and changed; supposing this to be true, it is still not a proof of the change of species; no, as before mentioned, it is merely like the change and alteration of the embryo of man until it reaches the degree of reason and perfection. We will state it more clearly: let us suppose that there was a time when man walked on his hands and feet, or had a tail; this change and alteration is like that of the foetus in the womb of the mother; although it changes in all ways, and grows and develops until it reaches the perfect form, from the beginning it is a special species. We also see in the vegetable kingdom that the original species of the genus do not change and alter, but the form, color, and bulk will change and alter, or even progress.

‘Abdu’l-Bahá, Bahá’í World Faith, p. 309

To recapitulate: as man in the womb of the mother passes from form to form, from shape to shape, changes and develops, and is still the human species from the beginning of the embryonic period -- in the same way man, from the beginning of his existence in the matrix of the world, is also a distinct species, that is, man, and has gradually evolved from one form to another. Therefore this change of appearance, this evolution of members, this development and growth, even though we admit the reality of growth and progress, does not prevent the species from being original. Man from the beginning was in this perfect form and composition, and possessed capacity and aptitude for acquiring material and spiritual perfections, and was the manifestation of these words, "We will make man in Our image and likeness." He has only become more pleasing, more beautiful, and more graceful. Civilization has brought him out of his wild state, just as the wild fruits which are cultivated by a gardener became finer, sweeter, and acquire more freshness and delicacy.

‘Abdu’l-Bahá, Bahá’í World Faith, p. 309

We have now come to the question of the modification of species and of organic development—that is to say, to the point of inquiring whether man’s descent is from the animal. This theory has found credence in the minds of some European philosophers, and it is now very difficult to make its falseness understood, but in the future it will become evident and clear, and the European philosophers will themselves realize its untruth. For, verily, it is an evident error. When man looks at the beings with a penetrating regard, and attentively examines the condition of existences, and when he sees the state, the organization and the perfection of the world, he will be convinced that in the possible world there is nothing more wonderful than that which already exists. For all existing beings, terrestrial and celestial, as well as this limitless space and all that is in it, have been created and organized, composed, arranged and perfected as they ought to be; the universe has no imperfection, so that if all beings became pure intelligence and reflected for ever and ever, it is impossible that they could imagine anything better than that which exists.

‘Abdu’l-Bahá, Some Answered Questions, p. 177

Evolution in the life of the individual starts with the formation of the human embryo and passes through various stages, and even continues after death in another form. The human spirit is capable of infinite development.

Shoghi Effendi, Lights of Guidance, p. 536

Man's evolution is both individual and collective, because of his twofold relationship to himself and to the society in which he lives. Individual evolution starts with the early stages of one's existence. Consciousness too grows with this evolution.

Shoghi Effendi, Lights of Guidance, p. 113