Like Professor Henderson, Professor Moore concedes to the vitalists about all they claim—­namely, that there is some form of force or manifestation of energy peculiar to living bodies, and one that cannot be adequately described in terms of physics and chemistry.  Professor Moore says this biotic energy “arises in colloidal structures,” and so far as biochemistry can make out, arises spontaneously and gives rise to that marvelous bit of mechanism, the cell.  In the cell appears “a form of energy unknown outside life processes which leads the mazy dance of life from point to point, each new development furnishing a starting point for the next one.”  It not only leads the dance along our own line of descent from our remote ancestors—­it leads the dance along the long road of evolution from the first unicellular form in the dim palaeozoic seas to the complex and highly specialized forms of our own day.

The secret of this life force, or biotic energy, according to Professor Moore, is in the keeping of matter itself.  The steps or stages from the depths of matter by which life arose, lead up from that imaginary something, the electron, to the inorganic colloids, or to the crystallo-colloids, which are the threshold of life, each stage showing some new transformation of energy.  There must be an all-potent energy transformation before we can get chemical energy out of physical energy, and then biotic energy out of chemical energy.  This transformation of inorganic energy into life energy cannot be traced or repeated in the laboratory, yet science believes the secret will sometime be in its hands.  It is here that the materialistic philosophers, such as Professors Moore and Loeb, differ from the spiritualistic philosophers, such as Bergson, Sir Oliver Lodge, Professor Thompson, and others.

Professor Moore has no sympathy with those narrow mechanistic views that see in the life processes “no problems save those of chemistry and physics.”  “Each link in the living chain may be physico-chemical, but the chain as a whole, and its purpose, is something else.”  He draws an analogy from the production of music in which purely physical factors are concerned; the laws of harmonics account for all; but back of all is something that is not mechanical and chemical—­there is the mind of the composer, and the performers, and the auditors, and something that takes cognizance of the whole effect.  A complete human philosophy cannot be built upon physical science alone.  He thinks the evolution of life from inert matter is of the same type as the evolution of one form of matter from another, or the evolution of one form of energy from another—­a mystery, to be sure, but little more startling in the one case than in the other.  “The fundamental mystery lies in the existence of those entities, or things, which we call matter and energy,” out of the play and interaction of which all life phenomena have arisen.  Organic evolution is a series of energy exchanges and transformations from lower to higher, but science is powerless to go behind the phenomena presented and name or verify the underlying mystery.  Only philosophy can do this.  And Professor Moore turns philosopher when he says there is beauty and design in it all, “and an eternal purpose which is ever progressing.”