It is unfortunate but not surprising that most of the psychological terms which we naturally employ tend to blur the distinction. ‘Knowledge’, ‘belief’, ‘assertion’, ‘thought’, and ‘understanding’, for, example, as ordinarily used, are ambiguous in a fashion which disguises and obscures the point which must be brought out. They record distinctions which are oblique to the distinctions required, they are cross-cuts of analysis made in the wrong place and in the wrong direction, useful enough for some purposes no doubt, but for this present purpose very confusing. We shall do well to put them out of mind for a while if possible.
The chief departure made from current conceptions in the sketch of the mind given in Chapter XI lay in the substitution of the causes, the characters and the consequences of a mental event, for its aspects as thought, feeling and will. This treatment was introduced with a view to the analysis which now occupies us. Among the causes of most mental events, we urged, two sets may be distinguished. On the one hand there are the present stimuli reaching the mind through the sensory nerves, and, in co-operation with these, the effects of past stimuli associated with them. On the other hand is a set of quite different factors, the state of the organism, its needs, its readiness to respond to this or that kind of stimulus. The impulses which arise take their character and their course from the interaction of these two sets. We must keep them clearly distinguished.
The relative importance of the two sets of factors varies enormously. A sufficiently hungry man will eat almost anything which can be chewed or swallowed. The nature of the substance, within these limits, has very little effect upon his behaviour. A replete person, by contrast, will only eat such things as he expects will taste pleasant, or regards as possessing definite beneficial properties, for example, medicines. His behaviour, in other words, depends almost entirely upon the character of his optical or olfactory stimulation.
So far as an impulse owes its character to its stimulus (or to such effects of past accompanying or connected stimuli as are revived) so far is it a reference, to use the term which we introduced in Chapter XI, to stand for the property of mental events which we substitute for thought or cognition.[*] It is plain that the independent internal conditions of the organism usually intervene to distort reference in some degree. But very many of our needs can only be satisfied if the impulses are left undistorted. Bitter experience has taught us to leave some of them alone, to let them reflect or correspond with external states of affairs as much as they can, undisturbed as far as possible by internal states of affairs, our needs and desires.
In all our behaviour can be distinguished stimuli we receive, and the ways in which we use them. What we receive may be any kind of stimulus, but only when the reaction we make to it tallies with its nature and varies with it in quasi-independence of the uses we make of it does reference occur.
Those to whom visual images are of service in considering complex matters may find it convenient at this point to imagine a circle or sphere constantly bombarded by minute particles (stimuli). Within the sphere may be pictured complex mechanisms continually changing for reasons having nothing to do with the external stimuli. These mechanisms by opening little gateways select which of the stimuli shall be allowed to come in and take effect. So far as the subsequent convulsions are due to the nature of the impacts and to lingering effects of impacts which have accompanied similar impacts in the past, the convulsions are referential. So far as they are due to the independent motions of the internal mechanisms themselves, reference fails. This diagrammatic image may possibly be of convenience to some. By those who distrust such things it may with advantage be disregarded. It is not introduced as a contribution to neurology, and is in no way a ground for the author’s view.
The extent to which reference is interfered with by needs and desires is underestimated even by those who, not having yet forgotten the events of 1914-1918, are most sceptical as to the independence of opinions and desires. Even the most ordinary and familiar objects are perceived as it pleases us to perceive them rather than as they are, whenever error does not directly deprive us of advantages. It is almost impossible for anyone to secure a correct impression of his own personal appearance or of the features of anyone in whom he is personally interested. Nor is it perhaps often desirable that he should.
For the demarcation of the fields where impulse should be as completely as possible dependent upon and correspondent with external situation, those in which reference should take prior place from those in which it may be subordinated to appetencies with advantage, is not a simple matter. On many views of the good and of what should be, themselves results of subordinating reference to emotional satisfactions, there could be no question. Truth, it would be said, has claims prior to all other considerations. Love not grounded upon knowledge would be described as worthless. We ought not to admire what is not beautiful and if our mistress be not really beautiful when impartially considered we ought, so the doctrine runs, to admire her, if at all, for other reasons. The chief points of interest about such views are the confusions which make them plausible. Beauty as an internal quality of things is usually involved, as well as Good the unanalysable Idea. Both are special twists given to some of our impulses by habits deriving ultimately from desires. They linger in our minds because to think of a thing as Good or Beautiful gives more immediate emotional satisfaction than to refer to it as satisfying our impulses in one special fashion (cf. Chapter VII) or another (cf. Chapter XXXII).
To think about Good or Beauty is not necessarily to refer to anything. For the term ‘thinking’ covers mental operations in which the impulses are so completely governed by internal factors and so out of control of stimulus that no reference occurs. Most ‘thinking of’ includes reference in some degree, of course, but not all, and similarly much reference would not commonly be described as thinking. When we drop something which is too hot to hold we would not usually be said to have done so through thinking. The two terms overlap, and their definitions, if there be a definition of ‘thinking’ as commonly used, are of different types. This is why ‘Thought’ was on an earlier page described as marking an oblique distinction.
To return, the claims of reference are by no means easy to adjust with other claims. An immense extension of our powers of referring has recently been made. With amazing swiftness Science has opened out field after field of possible reference. Science is simply the organisation of references with a view solely to the convenience and facilitation of reference. It has advanced mainly because other claims, typically the claims of our religious desires, have been set aside. For it is no accident that Science and Religion conflict. They are different principles upon which impulses may be organised, and the more closely they are examined the more inevitable is the incompatibility seen to be. Any so-called reconciliation which is ever effected will involve bestowing the name Religion upon something utterly different from any of the systematisations of impulses which it now denotes, for the reason that the belief elements present would have a different character.