Judging lines in the i ching

The phrase "judging lines" does not appear as a fixed technical term in the classical I Ching literature, but it points toward two distinct and related concepts that any serious reader of the oracle will encounter: the gua ci — the hexagram judgment as a whole — and the individual line statements (yao ci) that qualify, complicate, and sometimes overturn that judgment for the specific moment in which a reading is cast.

Wang Bi's third-century commentary establishes the interpretive logic that governs both. Each hexagram is, for Wang Bi, a unified entity whose "controlling principle" is expressed in its name and amplified in the judgment. The judgment speaks to the situation as a whole — its overall character, whether it tends toward facility or obstruction, whether action or withdrawal is called for. But the lines are where the oracle becomes granular:

"The hexagrams deal with moments of time, and the lines are concerned with the states of change that are appropriate to those times. Moments of time entail either obstruction or facility, thus the application of a given hexagram is either a matter of action or of withdrawal."

The judgment, then, is not a verdict in the legal sense — it is closer to a diagnosis of the moment's essential character. The lines then locate the questioner within that moment, specifying what the situation looks like from a particular position in the unfolding structure.

The mechanics of position. Wang Bi's scheme assigns each of the six line positions a quality: odd positions (first, third, fifth) are yang positions; even positions (second, fourth, sixth) are yin positions. A yang line in a yang position, or a yin line in a yin position, produces what Wang Bi calls a "congruent" relationship — generally favorable. A line out of position introduces friction. The fifth position — yang, central in the upper trigram, the "most noble" place — tends to function as the ruling line of the hexagram, the one through which the judgment's controlling principle is most fully expressed. The second position, central in the lower trigram, carries a similar authority at a more modest register. Both embody what Wang Bi calls zhong, centrality or the Mean — the territory of balanced, appropriate action.

Moving lines and the transformation of judgment. The question of which lines to read as most significant becomes acute when moving lines are present. Lines cast with the values 6 (old yin) or 9 (old yang) are at the extremity of their own principle — so full of their nature that they tip into their opposite, generating a second hexagram toward which the present situation tends. Jung, writing his foreword to the Wilhelm-Baynes edition, noted that while the Chinese tradition reads only the changing lines, he found all lines of the hexagram relevant in most cases — a characteristically Western modification that reflects his interest in the oracle as a mirror of the total psychic situation rather than a precise directional instrument.

The judgment and the moving lines exist in a productive tension. The judgment names the field; the moving lines name the specific pressure points within it. Richard Wilhelm's commentary on Hexagram 50, The Cauldron — the hexagram the I Ching gave Jung when he asked it about its own situation — illustrates this beautifully: the judgment establishes the vessel as a site of spiritual nourishment, while the moving lines in the second and third places introduce the complications: envy that cannot harm, a handle altered so that the vessel can no longer be grasped. The judgment promises; the lines qualify.

The oracle's epistemology. What makes this system philosophically interesting is the assumption underlying it — that the hexagram obtained at a given moment is not random but is "the exponent of the moment in which it was cast," as Jung put it in Psychology and Religion (CW 11). The judgment and the lines together constitute a "legible picture" of the situation, readable because everything occurring in a given moment shares in the same basic character. This is the synchronistic premise: not that the coins cause anything, but that their fall participates in the quality of the moment, just as the questioner's psychic state does. The judgment and the lines are therefore not predictions in the causal sense — they are images of what is already structurally present, waiting to be read.

I Ching — the Wilhelm-Baynes edition through which the oracle entered Western depth psychology
Moving lines — how old yin and old yang lines generate the second hexagram
Hexagram — the six-line figure as unified symbolic unit
Synchronicity — Jung's acausal connecting principle and its relationship to divination

Sources Cited

Wang Bi / Richard John Lynn, 1994, The Classic of Changes: A New Translation of the I Ching as Interpreted by Wang Bi
Jung, C.G., 1958, Psychology and Religion: West and East
Wilhelm, Richard / Baynes, Cary F., 1950, The I Ching or Book of Changes