Reason is the soul of law; when the reason of the law changes, the law itself changes.

Explanation

When the underlying reason for a rule has ceased to exist, the rule itself ceases — no law survives the death of the reason that gave it life.

Where this applies

• The original reason for a law no longer applies to the current situation.
• A regulation was created to address a problem that no longer exists.

See also

• 1.5.1 Law is the highest reason, which commands what is useful and necessary, and forbids what is contrary thereto.
• 1.5.7 The law always intends what is agreeable to reason.