Burdach, Buffon, Pouchet, Needham, and other professed vitalists, agree that in all life-manifestations there must be some preëxisting vital force or principle, without which no living thing, whether plant or animal, can come into existence.[11] M. Pouchet says: "I have always thought that organized beings were animated by forces which are in no way reducible to physical or chemical forces." The Abbé Needham is satisfied to formulate a "force végetative," so far as plant-life is concerned; Buffon invariably falls back on vital force or energy; and Burdach on a "force plastique," which is essentially inseparable from nature in her vital manifestations. According to the latter, the whole universe is an "_organisme absolu_" constantly endowed with life, and giving expression to it in all conceivable directions. And all that these vitalists need, to give a full interpretation to their facts of observation, is to supplement their theories with the Bible declaration that the animating principle of life is in the earth, from which all living things make their appearance, each distinctively after its own kind, whenever environing conditions favor. For they severally recognize these "necessary conditions" as inseparable from all vital manifestation. An effort has been made to show that Goethe was the great inspired prophet of the doctrine of "Evolution," as a ceaselessly progressive transformation of one thing into another, in the metamorphoses of plants and animals; and Haeckel quotes this passage from him as entirely conclusive of this point: "Thus much we should have gained (towards solving the problem of life) that all the more perfect organic beings, among which we include fishes, amphibians, birds, mammals (and at the head of the latter, man), to be formed according to an archetype, [12] which merely fluctuates more or less in its ever persistent parts, and moreover, day by day, completes and transforms itself by means of reproduction." But this attempt to give a poetic glorification to Haeckelism in Goethe's speculations, and bring his commanding name into support of the evolution theory of development, will prove utterly futile in the light of his "archetype," and the persistency with which he concedes that nature adheres to perfected forms.