(_b_) That life is something outside the scheme of mechanics—outside the categories of matter and energy; though it can nevertheless control or direct material forces—timing them and determining their place of application,—subject always to the laws of energy and all other mechanical laws; supplementing or accompanying these laws, therefore, but contradicting or traversing them no whit. This second answer I hold to be true; but in order to admit its truth we must recognise that force can be exerted and energy directed, by suitable adjustment of existing energy, without any introduction of energy from without; in other words, that the energy of operations automatically going on in any active region of the universe—any region where transformation and transference of energy are continuously occurring whether life be present or not—can be guided along paths that it would not automatically have taken, and can be directed so as to produce effects that would not otherwise have occurred; and this without any breakage or suspension of the laws of dynamics, and in full correspondence with both the conservation of energy and the conservation of momentum. That is where I part company with Professor James Ward in the second volume of _Naturalism and Agnosticism_; with whom nevertheless on many broad issues I find myself in fair agreement. Those who find a real antinomy between "mechanism and morals" must either throw overboard the possibility of interference or guidance or willed action altogether, which is one alternative, or must assume that the laws of Physics are only approximate and untrustworthy, which is the other alternative—the alternative apparently favoured by Professor James Ward. I wish to argue that neither of these alternatives is necessary, and that there is a third or middle course of proverbial safety: all that is necessary is to realise and admit that the laws of Physical Science are _incomplete_, when regarded as a formulation and philosophical summary of the universe in general. No Laplacian calculator can be supplied with all the data. On a stagnant and inactive world life would admittedly be powerless: it could only make dry bones stir in such a world if itself were a form of energy; I do not suppose for a moment that it could be incarnated on such a world; it is only potent where inorganic energy is mechanically "available"—to use Lord Kelvin's term,—that is to say, is either potentially or actually in process of transfer and transformation. In other words, life can generate no trace of energy, it can only guide its transmutations.