16 · Enthusiasm (YÙ)
Enthusiasm is the force that moves people by following the moment. It can found alliances and mobilize action, yet it can also sink into noise and delay. Its key is rhythm and direction.

The judgment
Enthusiasm: favourable to establish lords and set armies in motion.
When people and timing move together, it is favourable to build organization and mobilize resources, provided the order is clear.
Original Chinese text
豫,利建侯行師。
The six lines
- 初六 · Line 1 — Sounding enthusiasm: ominous.
Original Chinese
鳴豫,凶。
- 六二 · Line 2 — Firm as a stone; not through the day. Steadfastness brings good fortune.
Original Chinese
介于石,不終日,貞吉。
- 六三 · Line 3 — Looking upward for enthusiasm: regret. Delay brings regret.
Original Chinese
盱豫,悔。遲有悔。
- 九四 · Line 4 — From Enthusiasm comes great gain. Do not doubt; friends gather like hairpins.
Original Chinese
由豫,大有得。勿疑,朋盍簪。
- 六五 · Line 5 — Steadfast illness; it does not die away.
Original Chinese
貞疾,恆不死。
- 上六 · Line 6 — Dark enthusiasm. Once formed, there is change; no blame.
Original Chinese
冥豫,成有渝,無咎。