We might, of course, regard this apparently unreconcilable conflict between the arrangements which do prevail; as is commonly supposed, in the world, and those which ought to prevail, as a mystery which we must despair of ever understanding. But, to say the least of it, it is hardly consistent with the philosophic temper to treat any question as an insoluble riddle until one has tried all ways of solution and found them _culs-de-sac_. If we are to be thoroughly loyal to the spirit which prompts all intelligent inquiry, we are bound at least to ask whether it is, after all, beyond the power of human intelligence to think of the world as a system in which somehow, in the end, what ought to be prescribes what is. It is true that, for reasons already mentioned, we cannot, like Spinoza or the Sufis, reconcile facts and values by the simple assumption that what is is shown, by the fact that it is, to be what ought to be, and that our common conviction that sin and ugliness are painfully real is only an illusion due to spiritual short sight. We have just as much reason to believe that some pleasures are good, that pain which is not a means to good is evil, that justice and purity are good, lewdness and cruelty bad, that some colours are lovely and others odious, as we have to believe that between any two points there is always a third, or that, if _B_ and _C_ are two points there is always a point _D_ on the straight line _BC_ such that _C_ is between _B_ and _D_, and a point _A_ on _CB_ such that _B_ is between _C_ and _A_. Indeed, the most fanatical champion of what Mr. Russell in his anti-ethical mood calls 'ethical neutrality' cannot well avoid recognizing the truth of at least one proposition in ethics, the proposition that knowledge of scientific truth is _better_ than ignorance of it. The admission of this single truth of value is enough to raise all the time-honoured problems of ethics and theodicy. If knowledge of truth is better than ignorance of it, the actual present state of the world, in which so much truth is yet to seek, is by no means wholly good, and there really is at least one way in which it is our duty to make it more like what it ought to be.