The law may upset reason

The law may upset reason is Toranaga’s governing maxim: the law’s authority must prevail even when its application appears unreasonable. The expression connects his strict rules for foreigners, his management of religious and political concessions, and his insistence that the Taikō’s will remains binding. Its force lies in a distinction between judging whether a rule makes sense and claiming the right to set it aside.

The Maxim and Its Political Meaning

Toranaga gives the expression its fullest form while speaking with Hiro-matsu: “For the last time: ‘The law may upset reason but reason may never upset the law, or our whole society will shred like an old tatami. The law may be used to confound reason, reason must certainly not be used to overthrow the law.’ The Taikō’s will is law.” The image of society tearing apart makes the maxim more than a defense of obedience for its own sake. It presents law as the structure that holds the political order together, while warning that private reasoning, however persuasive, cannot become a license to overthrow it.

The exchange makes the principle concrete. Hiro-matsu asks whether Toranaga will take sole power; Toranaga answers by invoking the Taikō’s will, and Hiro-matsu bows in acceptance. Toranaga then tells him to pretend he has persuaded Toranaga to delay and to keep the generals under control. The maxim thus accompanies both a stated limit on Toranaga’s claim to power and a practical political instruction: obedience to the established order does not prevent careful management of events within it.

Law and Foreign Conduct

Earlier, Toranaga applies a categorical rule to Blackthorne’s presence in Japan. He tells him that affairs at sea or in a foreigner’s own country are not the issue; in Japan, “there is one law for all and foreigners are in our land by permission only.” Public mischief or quarrels will be dealt with by death, and Toranaga demands that the laws be obeyed. The scene establishes the immediate stakes of the maxim: Blackthorne’s wish to discuss trade or repair his ship does not displace Toranaga’s authority to decide what may be discussed and what conduct is permitted.

The interrogation also exposes competing definitions of lawful violence. When Toranaga asks what a pirate is, Blackthorne calls one “An outlaw. A man who rapes, kills, or plunders for personal profit.” Blackthorne rejects the charge that he is a pirate, explaining that the expedition’s ships carry letters of marque from the rulers of the Netherlands. Toranaga then asks whether the Netherlands, formerly vassals of the Spanish king, are rebelling against their lawful king. The exchange shows how an act presented as authorized service in one political order can be regarded as piracy or rebellion by another; Toranaga’s questions make the authority behind a claim of legality part of the interrogation.

Boundaries, Concessions, and the Taikō’s Will

Toranaga’s rules also govern the limits of foreign action on Japanese soil. When Blackthorne discusses using fighters and crews against hostile powers, Mariko relays Toranaga’s position that no daimyo would permit one foreign nation to attack another in Japan or kill Japanese people. Harassment of the Queen’s enemies at sea is treated differently, but Toranaga rejects a land attack and insists that Japan is not simply another place in which Blackthorne may pursue his country’s war. The distinction makes jurisdiction central: permission to act at sea does not confer permission to wage war within Japan.

Political and religious accommodation operates within the same framework. Toranaga promises that the Jesuits may lay the foundation stone for the Empire’s largest Christian temple on the forty-first day, but says the land will be set aside only after he arrives at Yedo. The concession is significant, yet it remains subject to his authority and timing. In the later maxim, that authority is explicitly bounded by the Taikō’s will, which Toranaga calls law. Together, these episodes show the expression working across punishment, foreign policy, and religious permission: reason may inform negotiation, but it does not itself overturn the rules or determine who has the authority to grant an exception.