Similarly, in answering the question ‘What ought we to aim at securing?’ causal judgments are again involved, but in a somewhat different way. We are liable to forget, because it is so obvious, that this question can never be answered correctly except by naming something which _can_ be secured. Not everything can be secured; and, even if we judge that nothing which cannot be obtained would be of equal value with that which can, the possibility of the latter, as well as its value, is essential to its being a proper end of action. Accordingly neither our judgments as to what actions we ought to perform, nor even our judgments as to the ends which they ought to produce, are pure judgments of intrinsic value. With regard to the former, an action which is absolutely obligatory _may_ have no intrinsic value whatsoever; that it is perfectly virtuous may mean merely that it causes the best possible effects. And with regard to the latter, these best possible results which justify our action can, in any case, have only so much of intrinsic value as the laws of nature allow us to secure; and they in their turn _may_ have no intrinsic value whatsoever, but may merely be a means to the attainment (in a still further future) of something that has such value. Whenever, therefore, we ask ‘What ought we to do?’ or ‘What ought we to try to get?’ we are asking questions which involve a correct answer to two others, completely different in kind from one another. We must know _both_ what degree of intrinsic value different things have, _and_ how these different things may be obtained. But the vast majority of questions which have actually been discussed in Ethics--_all_ practical questions, indeed--involve this double knowledge; and they have been discussed without any clear separation of the two distinct questions involved. A great part of the vast disagreements prevalent in Ethics is to be attributed to this failure in analysis. By the use of conceptions which involve both that of intrinsic value and that of causal relation, as if they involved intrinsic value only, two different errors have been rendered almost universal. Either it is assumed that nothing has intrinsic value which is not possible, or else it is assumed that what is necessary must have intrinsic value. Hence the primary and peculiar business of Ethics, the determination what things have intrinsic value and in what degrees, has received no adequate treatment at all. And on the other hand a _thorough_ discussion of means has been also largely neglected, owing to an obscure perception of the truth that it is perfectly irrelevant to the question of intrinsic values. But however this may be, and however strongly any particular reader may be convinced that some one of the mutually contradictory systems which hold the field has given a correct answer either to the question what has intrinsic value, or to the question what we ought to do, or to