Before proceeding to consider the main difference between the psychical life of the sexes, so far as the latter takes subjective and objective things as its contents, a few psychological soundings must be taken, and conceptions formulated. As the views and principles of prevailing systems of psychology have been formed without consideration of the subject of this book, it is not surprising that they contain little that I am able to use. At present there is no psychology but many psychologists, and it would really be a matter of caprice on my part to choose any particular school and attempt to apply its principles to my subject. I shall rather try to lay down a few useful principles on my own account.

The endeavours to reach a comprehensive and unifying conception of the whole psychical process by referring it to a single principle have been particularly evident in the relations between perceptions and sensations suggested by different psychologists. Herbart, for instance, derived the sensations from elementary ideas, whilst Horwicz supposed them to come from perceptions. Most modern psychologists have insisted that such monistic attempts must be fruitless. None the less there was some truth in the view.

To discover this truth, however, it is necessary to make a distinction that has been overlooked by modern workers. We must distinguish between the perceiving of a perception, feeling of a sensation, thinking a thought from the later repetitions of the process in which recognition plays a part. In many cases this distinction is of fundamental importance.

Every simple, clear, plastic perception and every distinct idea, before it could be put into words, passes through a stage (which may indeed be very short) of indistinctness. So also in the case of association; for a longer or shorter time before the elements about to be grouped have actually come together, there is a sort of vague, generalised expectation or presentiment of association. Leibnitz, in particular, has worked at kindred processes, and I believe them to underlie the attempts of Herbart and Horwicz.

The common acceptance of pleasure and pain as the fundamental sensations, even with Wundt’s addition of the sensations of tension and relaxation, of rest and stimulation, makes the division of psychical phenomena into sensations and perceptions too narrow for due treatment of the vague preliminary stages to which I have referred. I shall go back therefore to the widest classification of psychical phenomena that I know of, that of Avenarius into “elements” and “characters.” The word “character” in this connection, of course, has nothing to do with the subject of characterology.

Avenarius added to the difficulty of applying his theories by his use of a practically new terminology (which is certainly most striking and indispensable for some of the new views he expounded). But what stands most in the way of accepting some of his conclusions is his desire to derive his psychology from the physiology of the brain, a physiology which he evolved himself out of his inner consciousness with only a slight general acquaintance with actual biological facts. The psychological, or second part of his “Critique of Pure Experience,” was really the source from which he derived the first or physiological part, with the result that the latter appears to its readers as an account of some discovery in Atlantis. Because of these difficulties I shall give here a short account of the system of Avenarius, as I find it useful for my thesis.

An “Element” in the sense of Avenarius represents what the usual psychology terms a perception, or the content of a perception, what Schopenhauer called a presentation, what in England is called an “impression” or “idea,” the “thing,” “fact,” or “object” of ordinary language; and the word is used independently of the presence or absence of a special sense-organ stimulation—a most important and novel addition. In the sense of Avenarius, and for our purpose, it is a matter of indifference to the terminology how far what is called “analysis” takes place, the whole tree may be taken as the “element,” or each single leaf, or each hair, or (where most people would stop), the colours, sizes, weights, temperatures, resistances, and so forth. Still, the analysis may go yet further, and the colour of the leaf may be taken as merely the resultant of its quality, intensity, luminosity, and so forth, these being the elements. Or we may go still further and take modern ultimate conceptions reaching units incapable of sub-division.

In the sense of Avenarius, then, elements are such ideas as “green,” “blue,” “cold,” “warm,” “soft,” “hard,” “sweet,” “bitter,” and their “character” is the particular kind of quality with which they appear, not merely their pleasantness or unpleasantness, but also such modes of presentation as “surprising,” “expected,” “novel,” “indifferent,” “recognised,” “known,” “actual,” “doubtful,” categories which Avenarius first recognised as being psychological. For instance, what I guess, believe, or know is an “element”; the fact that I guess it, not believe it or know it, is the “character” in which it presents itself psychologically (not logically).

Now there is a stage in mental activity in which this sub-division of psychical phenomena cannot be made, which is too early for it. All “elements” at their first appearance are merged with the floating background, the whole being vaguely tinged by “character.” To follow my meaning, think of what takes place, when for the first time at a distance one sees something in the landscape, such as a shrub or a heap of wood, at the moment when one does not yet know what “it” is.

At this moment “element” and “character” are absolutely indistinguishable (they are always inseparable as Petzoldt ingeniously pointed out), so improving the original statement of Avenarius.