Why Does the Heihō Kadensho Call Winning a Sickness?

A fresh translation

Original text

Words and concepts

• 病 (yamai)
  “Sickness” or “illness.” In this section the word names a condition in which the heart-mind becomes caught and remains upon one object; it is not a medical diagnosis.
• 一筋 (hitosuji)
  One line or one course. Repeated with “to think,” it gives the passage its insistent sense of narrowing attention into a single intention.
• 習のたけ
  The full extent of what one has learned or practiced. The text includes the urge to display one’s accumulated training among the possible fixations.
• かゝらん / またん
  To attack or press forward / to wait. Opposite tactical choices can become the same kind of sickness when either is held as the only course.
• とゞまりたる
  Having stopped or remained. This final phrase supplies the passage’s general definition: the problem is not the mere appearance of a thought, but the mind’s stopping there.

The list begins with a respectable aim

“Winning” is not introduced as a shameful desire. In a text about swordsmanship, it is the expected object of attention. That is precisely why its placement at the head of the list matters. Munenori does not begin with panic, negligence, or ignorance. He begins with an aim that can appear entirely proper and calls the single-minded fixation upon it a sickness.

The distinction lies between an aim and the heart’s relation to that aim. The line does not say that victory can never matter. It says that thinking of victory hitosuji—along one exclusive line—can arrest judgment. Translation must keep that narrowing visible. If “sickness” is softened into a synonym for ordinary error, the force of the repeated construction disappears.

The next item makes the claim harder still. Even the wish to “use swordsmanship” can become sickness. Technique is not automatically the cure for an uncertain situation. A person who is intent on making a learned method appear may become governed by the method rather than by what is happening.

Training can become something one feels obliged to display

The phrase narai no take points to the extent of one’s learning. It names a temptation familiar to any transmitted art: after spending time acquiring methods, the practitioner wants the occasion to justify that labor. A technique has been learned, so the encounter begins to look like an opportunity to bring it out.

The passage does not belittle training. Without training there would be no “extent” to bring forth. Its warning concerns compulsion. The wish to exhibit all that has been learned can crowd out discrimination about what is needed. Accumulated knowledge becomes another object upon which the mind may stop.

This is also why the line should not be paraphrased as a rejection of form or instruction. The source gives no argument for abandoning practice. It identifies one danger within practice: confusing possession of a repertoire with an obligation to deploy it. A learned action and a timely action are not necessarily the same.

Attack and waiting become equivalent

Attacking and waiting appear as opposed choices. One moves first; the other withholds. A simple tactical lesson might praise one and condemn the other. Munenori instead places both inside the same grammatical frame. Single-minded attack is sickness, and thinking only of waiting is sickness.

The symmetry removes an easy escape. A reader cannot cure attachment to attack merely by adopting patience as an absolute rule. Waiting can harden into its own predecision. Once either stance is chosen before circumstances are read, attention is no longer free to register change.

Nothing in these lines tells us which action should occur in a particular encounter. They do not describe distance, posture, timing, an opponent’s movement, or a physical response. Their subject is the mental rigidity that can precede action. The passage therefore belongs to a manual of swordsmanship without functioning as a set of step-by-step instructions.

The cure can repeat the sickness

The most demanding turn comes after the tactical examples. To become fixed on removing sickness is itself called sickness. The wording does not permit a neat division between bad thoughts and one good corrective thought. If the mind stops upon the cure, the same condition has returned under a more respectable name.

This is not a logical joke. The final sentence explains the mechanism: whatever the object, stopping upon one thing is sickness. Winning, technique, training, attack, waiting, and purification differ in content. They become comparable because the heart-mind relates to each in the same fixed way.

The phrase “to become fixed” is important. A passing wish to win is not described with the same precision as an intention that has hardened. The text repeatedly joins thought to “one line” and then ends with the image of stopping. Its target is arrested responsiveness, not the existence of intention as such.

Why “sickness” should not be medicalized

Modern English makes “sickness” sound clinical. The source, however, is defining a defect within the operation of the heart-mind. It neither diagnoses a disease nor describes symptoms, treatment, or bodily pathology. Rendering yamai as “mental illness” would import a category the passage does not provide.

At the same time, “mistake” is too weak. The metaphor of sickness suggests something that obstructs proper functioning and requires correction. The following headings in the 1937 witness continue with stages of removing sickness. The local sequence confirms that the term organizes an extended discussion, even though this article quotes only the opening definition.

A source-led reading should preserve both limits. “Sickness” has real conceptual weight in the text, but it is not evidence about the author’s medical knowledge or the health of historical practitioners. It is vocabulary for fixation within a martial teaching.

What these four lines do not prove

They do not prove that Yagyū swordsmanship rejected winning. The passage criticizes becoming fixed upon winning; it does not replace the surrounding martial work with indifference to outcomes. They do not prove that planning is useless or that a practitioner should act randomly. Freedom from one rigid intention is not the same as the absence of judgment.

The lines also do not prove that training should be forgotten. “Bringing out” one’s learning under compulsion is the named sickness. The value, content, and method of training require evidence from elsewhere in the work. Nor can the passage establish how every Yagyū practitioner understood or embodied the teaching.

Finally, this is not a free-standing program of modern performance psychology. Later readers may recognize a familiar problem in overconcentration, but the historical passage is situated among instructions on the heart-mind in swordsmanship. Using it as generic advice would remove the very context that makes the list precise.

A definition created by repetition

The power of the passage comes less from any single item than from the accumulation. Winning sounds different from waiting. Displaying training sounds different from removing fixation. Repeated sentence endings force those objects into comparison until the final line names what they share.

That final definition is economical: the heart remains stopped upon one thing. It does not tell the reader to prefer passivity over action, spontaneity over learning, or defeat over victory. It asks whether attention is still able to move when circumstances change.

Restored to its page, the famous remark about winning is therefore only the entrance to the argument. The real subject is not victory alone. It is the conversion of any chosen object—even a remedy—into a place where the heart-mind can no longer proceed.

Source

Heihō Kadensho (兵法家伝書), “Katsunintō” (殺人刀), “On Sickness” (病気之事), in Fukui Kyūzō, ed., Hiseki Daimyō Bunko, vol. 2 (Kōseikaku, 1937), p. 20. The passage was checked directly in the public scan, image 19, on Wikimedia Commons. The file record identifies the scan as sourced from the National Diet Library; the corresponding NDL persistent identifier is 10.11501/1074542. The CiNii bibliographic record identifies Yagyū Munenori as author, Fukui Kyūzō as editor, Kōseikaku as publisher, and November 1937 as the publication date.