The Portuguese Constitution celebrates its 50th anniversary. This article reflects on its evolution through seven revisions, questioning whether the current text retains its original identity. It explores the tension between viewing the Constitution as an immutable 'bible' versus a living document that requires adaptation. The text highlights how revisions—some inevitable, such as the abolition of the Council of the Revolution, others driven by European integration or the need for democratic consolidation—have allowed the Constitution to survive and evolve like an organism undergoing metamorphosis.