Why was the preface to Victor Hugo’s play Cromwell important to Romanticism?

The preface to Victor Hugo’s 1827 play Cromwell is considered a foundational manifesto for Romanticism because it challenged the rigid constraints of classical drama.1

In this influential text, Hugo argued for a new form of theater that embraced the complexities of human existence. His key tenets included:

• The Integration of Contrasts: Hugo demanded that drama reflect the contradictions of life—such as good and evil, beauty and ugliness, and tears and laughter—by blending tragic and comic elements within a single play.1
• Rejection of Classical Rules: He advocated for abandoning the formal, restrictive rules of classical tragedy in favor of the creative freedom and truth found in the works of William Shakespeare.1

While the play itself was immense and difficult to stage, the preface served as a provocative and essential statement of Romantic doctrine, ultimately proving to be more significant to literary history than the drama it introduced.1