But before we proceed further it will be convenient, by way of elucidating the formal aspect of our subject, to explain at once, if in quite general terms, what we understand by the expression symbol.
Generally speaking, symbol is some form of external existence immediately presented to the senses, which, however, is not accepted for its own worth, as it lies thus before us in its immediacy, but for the wider and more general significance which it offers to our reflection. We may consequently distinguish between two points of view equally applicable to the term; first, the significance, and, secondly, the mode in which such significance is expressed. The first is a conception of the mind, or an object which stands wholly indifferent to any particular content, the latter is a form of sensuous existence or a representation of some kind or other.
1. Symbol, then, is in the first place a sign. When we speak of the significant and nothing more there is no necessary connection between the thing signified and its modus of expression whatever. This manner of its expression, this sensuous thing or image, so far from being immediately called up by that for which it is the sign, rather presents itself to the imagination as a wholly foreign content to it, by no means necessarily associated with it in a unique way. So, for example, in language tones are signs of specific conditions of idea or emotion. By far the greater number of the tones of any language are, however, associated with the ideas, which are thereby expressed entirely by chance, so far as the content of those ideas is concerned, even though the history of the development of language may show us that the original connection between the two was of a different nature, and that an essential element in the difference between one language and another consists in this, that the same idea is expressed through a different sound. Another example of such bare signs are colours[5], which we used in cockades or flags in order to express the nationality of an individual or vessel. Such colours by themselves alone carry no particular quality which can be immediately related to the thing they signify, that is, the nation which they represent. In a sense such as this, where the bond between the signification and the sign is one of indifference, symbol must not be understood when we connect the expression with art. For art consists precisely in the reciprocal relation, affinity, and substantive fusion of significance and form.
2. We must consequently interpret sign in a different sense when we speak of it as equivalent to symbol. The lion is, for example, a symbol of magnanimity, the fox symbolizes cunning, the circle eternity, the triangle the Triune God. Here we find that the lion and the fox themselves possess the qualities whose import they serve to express. In the same way the circle points beyond the mere indefinite extension, or the capriciously fixed limit of a straight line, or any other line that does not return upon itself, and which at the same time is suitable as the expression of a definite period of time; and the triangle regarded as a totality possesses the same number of sides and angles as is involved in the idea of God, when the determinations under which the religious consciousness defines the Supreme Being are expressed numerically.
In the latter forms of symbol therefore the objects presented to the senses have already in their own existence that significance, to represent and express which they are used; symbol as employed in this expanded sense is consequently no purely indifferent mark for something other than itself, but a significant fact which in its own external form already presents the content of the idea which it symbolizes. At the same time it is not the concrete thing it is itself, which it should bring before the imagination, but simply that general quality of significance which attaches to it.
3. We would, thirdly, draw attention to the fact that although symbol may not, as is the case with the purely external and formal sign, be wholly inadequate to the significance derived from it, yet, in order that it may retain its character as symbol, it must on the other hand present an aspect which is strange to it. In other words, though the content which is significant, and the form which is used to typify it in respect to a single quality, unite in agreement, none the less the symbolical form must possess at the same time still other qualities entirely independent of that one which is shared by it, and is once for all marked as significant, just as the content[6] need not necessarily be a bare abstract quality such as strength or cunning, but rather a concrete substance, which on its side, too, possesses a variety of characteristics which distinguish it from the primary quality in which its symbolic character consists, and in the same way, but to a still greater degree, from everything else that characterizes the symbolical form. The lion, for example, possesses other qualities than mere strength, the fox than mere cunning, and the apprehension of God is not necessarily bound up with conceptions which imply number. The content, therefore, as thus viewed, is also placed in a relation of indifference to the symbolical form, which represents it, and the abstract quality which it typifies may quite possibly be present in countless other existing objects. In the same way a content which is thus varied in its composition may possess many qualities, to symbolize any of which other forms will equally serve where a similar correspondence with such is apparent. The same reasoning is also applicable to the external object in which any particular content[7] is symbolically expressed. Such an object, in its concrete natural existence, possesses a number of characteristics for all of which it may stand as the symbol. The most obvious symbol for strength is unquestionably the lion, but the ox and the horn of the ox may equally serve as such, and from other points of view the ox possesses many other qualities as significant. But few objects, if any, have been brought home to the imagination with such a prodigal wealth of symbolic form and imagery as that of the Supreme Being. We may conclude, then, from the above remarks that the use of the term symbol is necessarily[8] and essentially open to ambiguity.
(a) For, in the first place, no sooner do we look for some symbol than the doubt almost invariably arises whether a particular form is to be accepted as a symbol or no; and this is so, though we set on one side the further ambiguity with reference to the particular nature of the content, which a given form under all the variety of its aspects may be held to symbolize, many of which may be employed symbolically through associating links that do not appear on the surface[9].
Now what a symbol primarily offers us is generally speaking a form, an image, which of itself is the presentment of an immediate fact. Such immediate existence, or its image, a lion for example, an eagle, or a particular colour, stands there before us as it is, a valid existing fact. The question consequently arises whether a lion, whose image is set before us, merely is set there to express the natural fact, or whether in addition to this it carries a further significance, that is the more abstract connotation of mere strength, or the more concrete one of a hero or a period of the year, husbandry and anything else we choose to infer from it; whether in fact, as we say, the image is to be taken literally, or with a further ideal significance, or possibly only with the latter. The last case finds its illustration in symbolical expressions of speech and particular words such as comprehension, conclusion[10] and others of the same kind. When such signify mental activities we have simply set before us the immediate import of a mental activity and no more without any recall to our memory of the material acts, which originally were implied in the meaning of these words. When on the contrary the picture of a lion is presented us we have not merely the significance to consider which it may bear as symbol, but also the bodily shape and presence of the king of beasts before our eyes. An ambiguity of this nature can only fully disappear when the sense attached to both aspects, namely, symbolical import, and its external form, is expressly stated, and we learn by this means the exact relation which exists between them. In that case, however, the concrete fact which is set before us ceases to be a symbol in the real meaning of the term, and becomes simply an image, the relation of which to significance is expressed by the well-known form of comparison, namely, simile. In the simile, that is to say, both factors are immediately presented to us, the general conception and its concrete image. When on the contrary reflection has not proceeded so far as to hold general conceptions in assured independence, and consequently to set them forth by themselves, in that case we find that the sensuous image to which they are cognate, and in which a significance of more general[11] import is able to find its expression is not yet conceived as separate from such a significance, but both are still immediately held together in unity. And this it is which, as we shall see more closely as we proceed, constitutes the distinction between symbol and comparison. An illustration of the latter kind may be found in that exclamation of Karl Moor, as he gazes on the setting sun: "Thus dies a hero!" Here we see that the ideal significance is expressly separated from the sensuous impression while at the same time it is associated with the picture. In other cases, it is true even of similes this act of separation in relation is not so clearly marked, and the association appears to be more immediate; in such cases it must already appear manifest from the general content of the narrative, from the position assigned to the picture, or other circumstances, that viewed as merely a statement of fact, such an image is not justified, but that some special significance or other, which cannot fail to arrest our attention, is intended by it. When, for example, Luther says:
A steadfast stronghold is our God.
or we read: