Many attempts have been made to reduce Science to a position of subjection to some instinct or emotion or desire, to curiosity for example. A special passion for knowledge for its own sake has even been invented. But in fact all the passions and all the instincts, all human needs and desires may on occasion supply the motive force for Science. There is no human activity which may not on occasion require undistorted reference. The essential point, however, is that Science is autonomous. The impulses developed in it are modified only by one another, with a view to the greatest possible completeness and systematisation, and for the facilitation of further references. So far as other considerations distort them they are not yet Science or have fallen out of it.

To declare Science autonomous is very different from subordinating all our activities to it. It is merely to assert that so far as any body of references is undistorted it belongs to Science. It is not in the least to assert that no references may be distorted if advantage can thereby be gained. And just as there are innumerable human activities which require undistorted references if they are to be satisfied, so there are innumerable other human activities not less important which equally require distorted references or, more plainly, fictions.

The use of fictions, the imaginative use of them rather, is not a way of hoodwinking ourselves. It is not a process of pretending to ourselves that things are not as they are. It is perfectly compatible with the fullest and grimmest recognition of the exact state of affairs on all occasions. It is no make-believe. But so awkwardly have our references and our attitudes become entangled that such pathetic spectacles as Mr Yeats trying desperately to believe in fairies or Mr Lawrence impugning the validity of solar physics, are all too common. To be forced by desire into any unwarrantable belief is a calamity. The state which ensues is often extraordinarily damaging to the mind. But this common misuse of fictions should not blind us to their immense services provided we do not take them for what they are not, degrading the chief means by which our attitudes to actual life may be adjusted into the material of a long-drawn delirium[*].

If we knew enough it might be possible that all necessary attitudes could be obtained through scientific references alone. Since we do not know very much yet, we can leave this very remote possibility, once recognised, alone.

Fictions whether aroused by statements or by analogous things in other arts may be used in many ways. They may be used, for example, to deceive. But this is not a characteristic use in poetry. The distinction which needs to be kept clear does not set up fictions in opposition to verifiable truths in the scientific sense. A statement may be used for the sake of the reference, true or false, which it causes. This is the scientific use of language. But it may also be used for the sake of the effects in emotion and attitude produced by the reference it occasions. This is the emotive use of language. The distinction once clearly grasped is simple. We may either use words for the sake of the references they promote, or we may use them for the sake of the attitudes and emotions which ensue. Many arrangements of words evoke attitudes without any reference being required en route. They-operate like musical phrases. But usually references are involved as conditions for, or stages in, the ensuing development of attitudes, yet it is still the attitudes not the references which are important. It matters not at all in such cases whether the references are true or false. Their sole function is to bring about and support the attitudes which are the further response. The questioning, verificatory way of handling them is irrelevant, and in a competent reader it is not allowed to interfere. “Better a plausible impossibility than an improbable possibility” said Aristotle very wisely; there is less danger of an inappropriate reaction.

The differences between the mental processes involved in the two cases are very great, though easily overlooked. Consider what failure for each use amounts to. For scientific language a difference in the references is itself failure: the end has not been attained. But for emotive language the widest differences in reference are of no importance if the further effects in attitude and emotion are of the required kind.

Further, in the scientific use of language not only must the references be correct for success, but the connections and relations of references to one another must be of the kind which we call logical. They must not get in one another’s way, and must be so organised as not to impede further reference. But for emotive purposes logical arrangement is not necessary. It may be and often is an obstacle. For what matters is that the series of attitudes due to the references should have their own proper organisation, their own emotional interconnection, and this often has no dependence upon the logical relations of such references as may be concerned in bringing the attitudes into being.

A few notes of the chief uses of the word ‘Truth’ in Criticism may help to prevent misunderstanding:—

1. The scientific sense that, namely, in which references, and derivatively statements symbolising references, are true, need not delay us. A reference is true when the things to which it refers are actually together in the way in which it refers to them. Otherwise it is false. This sense is one very little involved by any of the arts. For the avoidance of confusions it would be well if the term ‘true’ could be reserved for this use. In purely scientific discourse it could and should be, but such discourse is uncommon. In point of fact the emotive power which attaches to the word is far too great for it to be abandoned in general discussion; the temptation to a speaker who needs to stir certain emotions and evoke certain attitudes of approval and acceptance is overwhelming. No matter how various the senses in which it may be used, and even when it is being used in no sense whatever, its effects in promoting attitudes will still make it indispensable; people will still continue to use the word with the same promiscuity as ever.

2. The most usual other sense is that of acceptability. The ‘Truth’ of Robinson Crusoe is the acceptability of the things we are told, their acceptability in the interests of the effects of the narrative, not their correspondence with any actual facts involving Alexander Selkirk or another. Similarly the falsity of happy endings to Lear or to Don Quixote, is their failure to be acceptable to those who have fully responded to the rest of the work. It is in this sense that ‘Truth’ is equivalent to ‘internal necessity’ or rightness. That is ‘true’ or ‘internally necessary’ which completes or accords with the rest of the experience, which co-operates to arouse our ordered response, whether the response of Beauty or another. “What the Imagination seizes as Beauty must be Truth”, said Keats, using this sense of ‘Truth’, though not without confusion. Sometimes it is held that whatever is redundant or otiose, whatever is not required, although not obstructive or disruptive, is also false. “Surplusage!” said Pater, “the artist will dread that, as the runner on his muscles[†]” himself perhaps in this instance sweating his sentence down too finely. But this is to make excessive demands upon the artist. It is to apply the axe of retrenchment in the wrong place. Superabundance is a common characteristic of great art, much less dangerous than the preciousness that too contrived an economy tends to produce. The essential point is whether what is unnecessary interferes or not with the rest of the response. If it does not, the whole thing is all the better probably for the extra solidity which it thereby gains.