Note 33 — Chapter VI

Yet we have seen that this is a test than which none can be more ultimate. What then shall we say is the final outcome of this discussion concerning the rational standing of the teleological argument? The answer, I think, to this question is, that in strict reasoning the teleological argument, in its every shape, is inadequate to form a basis of Theism; or, in other words, that the logical cogency of this argument is insufficient to justify a wholly impartial mind in accepting the theory of Theism on so insecure a foundation. Nevertheless, if the further question were directly put to me, 'After having heard the pleading both for and against the most refined expression of the argument from teleology, with what degree of strictly rational probability do you accredit it?'—I should reply as follows:—'The question which you put I take to be a question which it is wholly impossible to answer, and this for the simple reason that the degree of even rational probability may here legitimately vary with the character of the mind which contemplates it.' This statement, no doubt, sounds paradoxical; but I think it is justified by the following considerations. When we say that one proposition is more conceivable than another, we may mean either of two very different things, and this quite apart from the distinction previously drawn between symbolic conceptions and realisable conceptions. For we may mean that one of the two propositions presents terms which cannot possibly be rendered into thought at all in the relation which the proposition alleges to subsist between them; or we may mean that one of the two propositions presents terms in a relation which is more congruous with the habitual tenor of our thoughts than does the other proposition. Thus, as an example of the former usage, we may say, It is more conceivable that two and two should make four than that two and two should make five; and, as an example of the latter usage, we may say, It is more conceivable that a man should be able to walk than that he should be able to fly. Now, for the sake of distinction, I shall call the first of these usages the test of absolute inconceivability, and the second the test of relative inconceivability. Doubtless, when the word "inconceivability" is used in the sense of relative inconceivability, it is incorrectly used, unless it is qualified in some way; because, if used without qualification, there is danger of its being confused with inconceivability in its absolute sense. Nevertheless, if used with some qualifying epithet, it becomes quite unexceptionable. For the process of conception being in all cases the process of establishing relations in thought, we may properly say, It is relatively more conceivable that a man should walk than that a man should fly, since it is more easy to establish, the necessary relations in thought in the case of the former than in the case of the latter proposition. The only difference, then, between what I have called absolute inconceivability and what I have called relative inconceivability consists in this—that while the latter admits of degrees, the former does not.[33]