What is effectual in one of two like things shall be effectual in the other.

Explanation

A rule that operates in one case extends to every case that stands on the same footing; consistency is the life of the law.

Where this applies

• A rule that works in one similar case should work in the other.
• What is effective for one case on the same footing should be effective for the other.
• Consistency demands the same result in like cases.

See also

• 10.9.1 Of things similar, the judgment is the same.
• 10.9.3 From similars to similars, we are to proceed by the same rule.