The name 名
Héng 恆 means lasting, in two senses: the constancy of not changing, holding a principle for life, and the constancy of not ceasing, motion that never stops. Take only the first and constancy hardens into stubbornness; hold both and you have real endurance, just as “change” in the Yijing means both the unchanging and the ever-changing.
The image 象
Héng is Xián turned upside down. Above is Zhèn, thunder and the eldest son; below is Xùn, wind and the eldest daughter. No longer young lovers meeting, but a grown couple already married: he active outside, she accommodating within, thunder and wind moving together. As in Xián, every line has its partner: 1 with 4, 2 with 5, 3 with 6.
Layers of images 層
A gua can be read on several levels at once: the trigrams as members of a family (father, mother, eldest to youngest sons and daughters), the six lines as ranks in an organisation (from newcomer to ruler), and as forces of nature and animals. Each extra level adds meaning to the line texts.
Read as a family
Xián is the stirring of two young hearts; Héng is daily life after the eldest son and eldest daughter have married. He acts outside, she enters and settles within; each has a place, so it can last. Yet most of Héng’s lines are hard: duration does not come from one promise but from two people finding their places again and again. Swap the trigrams, eldest son below and eldest daughter above, and you get Yì, Increase: the same couple, and when the husband is willing to lower himself, the household gains.
Line 1, “digging deep for permanence; persisting is ominous”: Line 1 is the bottom of Xùn, which means entering, so it burrows too deep right away; corresponding with Line 4, it demands an instant guarantee of forever. Insisting on permanence at the very start of a relationship only makes things worse the harder one presses.
Line 3, “not constant in its virtue, it may meet disgrace”: a yang line in a yang place, Line 3 sits in the nuclear Qián (lines 2–4), too much drive to hold still, and in the nuclear Duì (lines 3–5), which means a gap or flaw. Jumping from one thing to the next, its character has no constancy, and shame follows.
Line 5, “constant in its virtue; steady; good fortune for a wife, misfortune for a husband”: Line 5 is yin, yet it sits at the centre of Zhèn, the eldest son’s trigram, corresponding with Line 2. Simply following and never changing was a virtue in an ancient wife but a failure in a husband who had to decide. Today it need not be about gender: the same steadfastness can turn out opposite in different roles.
Top line, “restless permanence; misfortune”: the top place is the end of the hexagram and the top of Zhèn, which is movement. In the later years, when things should settle, it keeps stirring and changing, and shakes apart the very stability it has built.
Turn Héng over and you get Xián. Xián is love at first sight, Héng day after day; Héng’s first line, demanding permanence too early, forgets Xián’s lesson that feeling starts shallow. If Héng feels dull, look back at Xián: a lasting bond still needs the responsiveness it began with.
Swap Héng’s trigrams and you get Yì, Increase, which is also its opposite hexagram. In Héng the eldest son is above, the eldest daughter below; in Yì he is below and she above, and the Tuan speaks of “decreasing above to increase below.” With the same two people, who is willing to take the lower place and give decides whether a household merely holds on or grows together.
In sequence 序
夫婦之道，不可以不久也，故受之以恆；恆者久也。
The Xu Gua: the way of husband and wife cannot but endure, so Constancy follows; constancy means lasting. Xián is the quick spark of feeling; Héng asks the harder question of how a marriage is to last. Sparks are easy; lasting is not.
The judgment 辭
恆：亨，无咎。利貞，利有攸往。
The judgment: constancy brings success and no blame; it is fitting to be steadfast, and fitting to have somewhere to go. “Be steadfast” and “go forward” seem to pull against each other, but they are the two faces of constancy: steadfastness is the unchanging, keeping the root; going is the unceasing, continuing on. Only holding still, one stiffens; only moving, one gets lost.
Commentary on the judgment 彖
彖曰：恆，久也。剛上而柔下，雷風相與，巽而動，剛柔皆應，恆。恆亨无咎，利貞；久于其道也，天地之道，恆久而不已也。利有攸往，終則有始也。日月得天，而能久照，四時變化，而能久成，聖人久于其道，而天下化成；觀其所恆，而天地萬物之情可見矣！
The Tuan: firm rises, yielding descends; thunder and wind accompany each other; gentle and then active, firm and yielding all in accord: hence constancy. The way of heaven and earth endures without ceasing; going forward is fitting because “when one thing ends, another begins.” Sun and moon, following heaven, shine long; the seasons, by changing, complete themselves for ages; the sage, long true to his way, transforms the world. This is the Yijing’s method: observe the way of heaven, and order the human way by it.
The great image 象
象曰：雷風，恆；君子以立不易方。
The Great Image: thunder and wind, Constancy; the noble person stands firm and does not change direction. 方 is the right direction, the true way. Thunder and wind never stop moving, yet the noble person’s bearing does not shift. The Great Commentary agrees: “constancy is the stabilizing of virtue.” A sincere turning is virtue’s root, but only long perseverance makes it firm; character is never made in a single leap.
The six lines 爻
Ruling line The notes name no ruling line. Most lines are hard; only Line 2, which “can long abide in the centre,” comes close to the hexagram’s ideal.
The path of the six lines, bottom to top
Line 1 demands depth and guarantees from the start, too fast, and the harder it insists the worse it gets. Line 2, yang in a soft place, would have regrets, but by keeping to the middle way they vanish. Line 3, at the top of the lower trigram, is inconstant, always switching, and meets disgrace. Line 4 enters the upper trigram and hunts in a field with no game: in the wrong place, however long it persists, it catches nothing. Line 5 holds to one way unchanged, good for one role, bad for another. The top line keeps stirring at the very end and shakes apart what had lasted.
初六浚恆，貞凶，无攸利。
In plain words
Digging deep for permanence at the start: persisting brings misfortune; nothing is favourable.
Close reading
浚 is to dredge deep. A yin line in a yang place, not correct; its partner, Line 4, is screened off by two yang lines, and Line 4, inside active Zhèn, is too busy rising to attend to it. To demand at the very outset that everything be settled forever is to keep the constant without knowing change. The Small Image: it seeks depth too early, and haste defeats itself.
One level deeper
Line 1, “digging deep for permanence; persisting is ominous”: Line 1 is the bottom of Xùn, which means entering, so it burrows too deep right away; corresponding with Line 4, it demands an instant guarantee of forever. Insisting on permanence at the very start of a relationship only makes things worse the harder one presses.
If you drew this line
At the start of a relationship or venture, don’t demand permanent guarantees. Give it time to take root.
九二悔亡。
In plain words
Regret vanishes.
Close reading
The regret comes from a yang line in a yin place: an incorrect position rarely lasts. But in the Yijing, centrality outweighs correctness. Central in the lower trigram and answering Line 5, this line can hold to the middle way for a long time, so regret falls away. The Small Image: it can long abide in the centre, which in this hexagram is no small thing.
If you drew this line
Conditions may not be ideal, but keep your balance and avoid extremes, and you can last.
九三不恆其德，或承之羞，貞吝。
In plain words
One who does not keep his virtue constant will meet disgrace; even persisting is hard.
Close reading
A yang line in a yang place, correct and answering the top line; but it is restless within the inner Qián and sits at the end of Xùn, the trigram of wavering. Hence a mind of many minds. Lines 3–5 form an inner Duì, an image of a gap or flaw. The Small Image: such a person finds no place to be accepted. This is the only line whose words Confucius quotes in the Analects.
One level deeper
Line 3, “not constant in its virtue, it may meet disgrace”: a yang line in a yang place, Line 3 sits in the nuclear Qián (lines 2–4), too much drive to hold still, and in the nuclear Duì (lines 3–5), which means a gap or flaw. Jumping from one thing to the next, its character has no constancy, and shame follows.
If you drew this line
Wavering costs you trust. Choose what is right to do and keep at it; don’t chase every new attraction.
Persist, Then Adjust a Little
The organizer of a lecture series, unsure whether the next course should stay where it was or move elsewhere for an intensive run, cast and drew this line. The reading: Constancy says keep to the path already walked; “persisting is hard” admits that this is not easy. So the course stayed put, with fees adjusted to balance the books, and the students accepted it. Constancy without rigidity is what the Great Commentary means: when a thing reaches its limit it changes; changing, it gets through; getting through, it lasts.
九四田无禽。
In plain words
Hunting in the field, no game.
Close reading
A yang line in a yin place, neither central nor correct; the Small Image says flatly that it has long been out of place. Héng derives from Tài: Tài’s bottom yang rose to become this line, and in doing so the upper Kūn, earth and field, disappeared. No field, no game. (禽 in the Yijing covers beasts as well as birds.) Its partner below is still screened off by two yang lines.
If you drew this line
If long effort yields nothing, ask whether you are in the wrong place before simply trying harder.
六五恆其德，貞，婦人吉，夫子凶。
In plain words
Constant in virtue and steadfast: good fortune for the wife, misfortune for the husband.
Close reading
A yin line in a yang place, not correct but central, answering Line 2. Rarely does one line give opposite verdicts for two kinds of people. The Small Image: the wife is fortunate because she follows one to the end; the husband must judge by what is right, and simply following leads to misfortune. Today it need not be read by gender: when you serve, loyal following of an upright leader is good; when you lead, you must judge by principle and adapt to circumstance, keeping the norm while weighing the case.
One level deeper
Line 5, “constant in its virtue; steady; good fortune for a wife, misfortune for a husband”: Line 5 is yin, yet it sits at the centre of Zhèn, the eldest son’s trigram, corresponding with Line 2. Simply following and never changing was a virtue in an ancient wife but a failure in a husband who had to decide. Today it need not be about gender: the same steadfastness can turn out opposite in different roles.
If you drew this line
First decide whether you are follower or decider here: the follower’s virtue is loyalty, the decider’s is judgment by what is right.
上六振恆，凶。
Variant Shown as 「振恆」; some editions read 「震」.
In plain words
Shaking restlessly in constancy: misfortune.
Close reading
A yin line in a yin place, correct, answering Line 3; but it stands at the end of Constancy and at the very top of Zhèn, where the shaking is strongest. The hexagram asks for steady endurance; this line cannot stop. The Small Image: restless in a high place, it achieves nothing at all.
One level deeper
Top line, “restless permanence; misfortune”: the top place is the end of the hexagram and the top of Zhèn, which is movement. In the later years, when things should settle, it keeps stirring and changing, and shakes apart the very stability it has built.
If you drew this line
Above all, avoid restless upheaval and constant reinvention. Be still and let what you have built settle.
Stories 典
Without Constancy, Not Even a Healer Can Help
In the Analects (Zilu), Confucius says: “The southerners have a saying: a person without constancy cannot be helped even by a shaman-healer. How true!” He then quotes this hexagram’s third line, “one who does not keep his virtue constant will meet disgrace,” and adds: “There is no need to divine.” It is the only place in the Analects where Confucius cites the Yijing’s actual words. The first phrase is often rendered “cannot become a shaman-healer,” as though that were an easy job; the better reading takes 作 as “to raise up”: without constancy, not even a healer can get you on your feet, just as no doctor can help a patient who won’t keep taking the medicine. And “no need to divine” means the point is so plain one hardly needs an oracle.
Three Moving Lines, Not One “Auspicious”
Someone asked about a relationship and drew Constancy with the first three lines moving, changing into Zhèn. The three line texts held misfortune, regret, disgrace and difficulty, not a single “auspicious,” not even “no blame,” and the resulting Zhèn hinted at continued upheaval. Constancy is the image of marriage, yet three of its lines speak of misfortune: keeping a household is hard. When feelings swing like an unpredictable market, there is little better to do than cultivate oneself, and Line 3’s warning about inconstant virtue is enough to wake one up.
Insight 悟
Xián is about how feeling is kindled; Héng is about keeping it alight. Surprisingly, most of Héng’s lines are hard: too eager at the start brings misfortune, restless at the end brings misfortune too. Lasting does not come from a burst of passion but from two disciplines: the unchanging, which holds direction, and the unceasing, which keeps renewing. The Great Commentary says constancy is “varied yet never wearisome”: weave change into routine and life does not go stale. Virtue is the same: it is built by long persistence, not a single moment of insight.