Inner Truth, Line 5

The fifth line of Inner Truth (King Wen 61) is drawn as yang, the numeral nine in the old divination manuals. James Legge's translation renders the line as perfectly sincere, and linking others to himself, no error. The image sits inside a hexagram whose judgment as a whole concerns reaching even pigs and fish, good fortune, advantage in crossing the great stream, advantage in being firm and correct, and this line supplies one stage of that larger reading rather than a complete statement on its own.

Structurally the line stands at the middle place of the upper trigram Xun, wind in Legge's readings of the eight trigrams, while the lower trigram of the hexagram is Dui, lake in the same traditional set of images. The Great Symbolism of the hexagram reads wind above the waters of a marsh; the superior man deliberates carefully over criminal cases and delays the infliction of death, and the fifth line takes its place inside that combined picture of Dui below and Xun above.

Read on its own the line neither opens nor closes the hexagram's argument. It marks the point where Xun is either forming (in the lower trigram) or completing itself (in the upper), and later interpreters treat its image, The Perfectly Sincere, as the concrete case through which the hexagram's abstract judgment becomes visible in a single situation rather than a general principle.

As a divinatory line, nine at the fifth place of Inner Truth reads within the hexagram's overall concern with reaching even pigs and fish, good fortune, advantage in crossing the great stream, advantage in being firm and correct. The line occupies a place proper to its own nature in the classical doctrine that odd places favour a firm, yang line and even places favour a yielding, yin line. It is also one of the two central lines of the hexagram, the place classical reading treats as the most balanced regardless of the line's own character. Its own text, that perfectly sincere, and linking others to himself, no error, is the particular fortune assigned to this one stage of the situation, not to the hexagram as a whole.

The fifth line corresponds by classical convention with the second line, and the two do not correspond here, since both lines share the same character. Read together with the trigram it belongs to, Xun in the upper position of the figure, the line marks the ruling stage of the hexagram, the place classical reading treats as its centre of authority, one stage in the six stage movement the hexagram traces from its first line to its last.

A change at this line, from yang to its opposite, is the mechanism the tradition uses to move from one hexagram to another. Flipping the fifth line of Inner Truth turns Xun into Gen while the other trigram, Dui, stays as it is, which yields Inner Truth's changing partner, Decrease (King Wen 41), the hexagram this line is recorded as transforming into.