But the relation of the _Darwinian_ theories to ethical problems is quite a different thing. Here, in the first place, it is not the same process which is to be explained as well in regard to its natural conditions as to its moral cause. It is true that this double view deserves attention in so far as we can look upon every action which results from a moral determination also in reference to its natural side. If I have to raise my arm in consequence of a moral determination, then physiology and mechanism can demonstrate with it the whole theory of the motion of members. But this is not the question, when we treat of the relation between the natural and the ethical. In this example, the moralist examines the motives of my action, the scientist describes and explains the activity of the nerves and muscles of my arm, and as long as the scientist is not guilty of going beyond the boundary to which he is tempted, and which even now we are endeavoring to make clear, as long as he does not include the ethical motives in his physiological attempts at explanation, the one keeps himself neutral with reference to the other; each of them knows that he is {388} operating in a field which at first has nothing in common with that of the other. In a moral action, _as such_, the question is no longer as to a process which is to be explained as well in regard to its natural conditions as to its ethical cause, but of a process which _either_ has its ethical cause, and then in its ethical value _no_ natural cause, _or_ which even in its ethical motives belongs to the causal connection of empirical nature with its indestructible chain of natural causes and natural effects. Now at this point the scientist, as such, is always exposed to the danger of denying the first part of our dilemma and affirming the second. For, in moral action, something which is elevated above nature and its causal connection always makes its way into this causal connection of nature, and with its action and the effects of this action wholly enters into this connection: and natural science which has to deal particularly with this causal connection of nature and with it alone, is on that account nevertheless always tempted to explain everything that it sees coming into this connection, in _all_ its causes (even in those which no longer belong to this natural causal connection), out of it. It is therefore always tempted to trace even ethical action which, with its deeds, makes its way and enters into this causal connection, but which with its motives stands above it, as to its motives, back to a natural causal connection; and thus to contest the independence of ethical motives and their principles--which independence is not dependent on nature, but, on the contrary, frequently contradicts it. Ethics must adhere to the fact that the ethical determination of the will has its origin not in a natural condition, but in the ethical centre of personality; although all the conditions under which