“Oh, but of course the story of Adam and Eve was only ever symbolic, wasn't it? Symbolic?! So Jesus had himself tortured and executed for a symbolic sin by a non-existent individual? Nobody not brought up in the faith could reach any verdict other than "barking mad."”

[4] Symbol
Semiotics and the Philosophy of Language (1984)
Context: What is a symbol? Etymologically speaking, the word σύμβολον comes from σνμβάλλω, to throw-with, to make something coincide with something else: a symbol was originally an identification mark made up of two halves of a coin or of a medal. Two halves of the same thing, either one standing for the other, both becoming, however, fully effective only when they matched to make up, again, the original whole. … in the original concept of symbol, there is the suggestion of a final recomposition. Etymologies, however, do not necessarily tell the truth — or, at least, they tell the truth, in terms of historical, not of structural, semantics. What is frequently appreciated in many so-called symbols is exactly their vagueness, their openness, their fruitful ineffectiveness to express a 'final' meaning, so that with symbols and by symbols one indicates what is always beyond one's reach.

Source: Toast, and Other Stories

30 December 1850
Journal Intime (1882), Journal entries
Context: Everything which is, is thought, but not conscious and individual thought. The human intelligence is but the consciousness of being. It is what I have formulated before: Everything is a symbol of a symbol, and a symbol of what? of mind.

Source: Spirit and Reality (1946), p. 52
Context: Spirit, like flame, like freedom, like creativeness, is opposed to any social stagnation or any lifeless tradition. In terms of Kantian philosophy — terms which I consider erroneous and confusing — spirit appears as a thing in itself and objectification as a phenomenon. Another and truer definition would be, spirit is freedom and objectification is nature (not in the romantic sense). Objectification has two aspects: on the one hand it denotes the fallen, divided and servile world, in which the existential subjects, the personalities, are materialized. On the other it comprehends the agency of the personal subject, of spirit tending to reinforce ties and communications in this fallen world. Hence objectification is related to the problem of culture, and in this consists the whole complexity of the problem.
In objectification there are no primal realities, but only symbols. The objective spirit is merely a symbolism of spirit. Spirit is realistic while cultural and social life are symbolical. In the object there is never any reality, but only the symbol of reality. The subject alone always has reality. Therefore in objectification and in its product, the objective spirit, there can be no sacred reality, but only its symbolism. In the objective history of the world nothing transpires but a conventional symbolism; the idea of sacredness is peculiar to the existential world, to existential subjects. The real depths of spirit are apprehensible only existentially in the personal experience of destiny, in its suffering, nostalgia, love, creation, freedom and death.

Source: Science and the Unseen World (1929), Ch. V, p.53

Paris Review interview (1958)
Context: No one is without Christianity, if we agree on what we mean by that word. It is every individual’s individual code of behavior by means of which he makes himself a better human being than his nature wants to be, if he followed his nature only. Whatever its symbol — cross or crescent or whatever — that symbol is man’s reminder of his duty inside the human race. Its various allegories are the charts against which he measures himself and learns to know what he is. It cannot teach a man to be good as the textbook teaches him mathematics. It shows him how to discover himself, evolve for himself a moral codes and standard within his capacities and aspirations, by giving him a matchless example of suffering and sacrifice and the promise of hope.

Source: Language in Thought and Action (1949), Bearing the Unbearable, p. 144-145

LSD : My Problem Child (1980)
Context: The cultural-historical meaning of the Eleusinian Mysteries, their influence on European intellectual history, can scarcely be overestimated. Here suffering humankind found a cure for its rational, objective, cleft intellect, in a mystical totality experience, that let it believe in immortality, in an everlasting existence.
This belief had survived in early Christianity, although with other symbols. It is found as a promise, even in particular passages of the Gospels, most clearly in the Gospel according to John, as in Chapter 14:16-20. Jesus speaks to his disciples, as he takes leave of them:

quoted in Asger Jorn (2002) by Arken Museum of Modern Art, p. 166
Jorn is talking about symbolism of the Nordic myths
1959 - 1973, Various sources