An amendment [to the original instrument] is not a repeal. [Fundamental principles are not annulled by amendment.].

Explanation

(English-origin maxim.) An amendment modifies but does not repeal — the fundamental principles of the original instrument survive amendment unless expressly abrogated.

Where this applies

• The Bill of Rights was amended by later amendments, but the fundamental rights in the original ten amendments were not repealed — amendment modifies without destroying.
• A city council amends a zoning ordinance to add a new category, but the core provisions of the original ordinance remain in full force.
• A corporate bylaw is amended to update the quorum requirement, but the fundamental governance structure established by the original bylaws survives the change.