革Ge.Revolution.
Lake stands above Fire: opposed forces transform one another and an existing form can no longer remain unchanged. Ge concerns legitimate reform, correct timing and the trust earned when necessary change proves itself.
Transform the order only when trust, timing and replacement align.
Ge originally evokes the changing of an animal hide and extends to renewal, reform and revolution. Water and Fire occupy one structure but pull in different directions.
Belief may come only after the change demonstrates its value. Correct reform does not demand premature trust; it earns trust through appropriate timing and coherent results.
Lake above. Fire below.
Water and Fire counteract each other. Their unresolved incompatibility makes transformation necessary.
Change becomes trustworthy when it is timely and correct.
The governing proposition
革：巳日乃孚，元亨利貞，悔亡。
Revolution. On the proper day there is trust. Great success through beneficial correctness. Regret disappears.
Transformation according to time
革，水火相息，二女同居，其志不相得，曰革。革而當，其悔乃亡。
Water and Fire displace one another; their intentions do not accord. When transformation is appropriate, regret disappears.
Clarify the times
澤中有火，革；君子以治曆明時。
Fire within the Lake: Revolution. The cultivated person regulates the calendar and clarifies the seasons.
Six stages of legitimate change.
Bound with yellow ox hideSecure the beginning; do not move prematurely · Changes to 31 咸
初九：鞏用黃牛之革。
The need for change exists, but authority and timing are not ready. Restraint protects the future reform.
小象傳 · 鞏用黃牛，不可以有為也.The firm binding means action is not yet possible.
On the proper day, make the changeGoing brings good fortune and no blame · Changes to 43 夬
六二：巳日乃革之，征吉，無咎。
Preparation, position and timing now agree. Change may proceed responsibly.
小象傳 · 巳日革之，行有嘉也.Change on the proper day makes movement commendable.
Advancing is dangerous; correctness is perilousAfter three discussions, trust emerges · Changes to 17 隨
九三：征凶，貞厲，革言三就，有孚。
Do not force reform through a single declaration. Repeated examination creates credible consensus.
小象傳 · 革言三就，又何之矣?Once the case has been established three times, what else remains?
Regret disappears; change the mandate with trustLegitimate structural reform brings good fortune · Changes to 63 既濟
九四：悔亡，有孚改命，吉。
The change now carries sufficient trust to alter the governing order.
小象傳 · 改命之吉，信志也.The change is fortunate because the intention is trusted.
The great person changes like a tigerTrust exists before divination · Changes to 55 豐
九五：大人虎變，未占有孚。
Transformation becomes visible, patterned and unmistakable. Character itself establishes confidence.
小象傳 · 大人虎變，其文炳也.The tiger’s change is brilliant in its pattern.
The cultivated person changes like a leopardLesser people change their faces · Changes to 13 同人
上六：君子豹變，小人革面，征凶，居貞吉。
After reform, consolidate rather than continue campaigning. Deep change and surface compliance require different handling.
小象傳 · 君子豹變，其文蔚也；小人革面，順以從君也.The leopard’s pattern becomes complete; others outwardly follow.
Replace what no longer works—then stabilise the new order.
Work and leadership
Build the case, establish timing, secure legitimacy and define the replacement before dismantling the old system.
Relationships
Change agreements when the old form cannot hold truth, but distinguish deep transformation from temporary compliance.
Timing and decisions
Too early creates resistance; too late preserves dysfunction. Act when necessity and readiness converge.
Ge is constructive when change earns legitimacy and creates a viable successor.
Aligned expression
- The old form is genuinely exhausted.
- Timing is established.
- The case survives repeated review.
- The new order is consolidated.
Distorted expression
- Change serves impatience.
- Force substitutes for trust.
- Critique exists without replacement.
- Revolution never ends.