The drama was written in verse, a form of literary composition foreign to Balzac's talent. Even during the months he laboured at his task, he confessed to Laure, 'midst his sallies of joking, that what he was writing teemed with defective lines. He polished and repolished, however, hoping to overcome these drawbacks, upheld by his invincible self-confidence. The piece, as sketched out in his correspondence, made large alterations in English history. Its interest hinged chiefly on the dilemma created in Cromwell's mind by his two sons falling into the hands of a small Royalist force, and by Charles's ordering them to be given up without conditions to their father, although the King was a prisoner. Posed in the third act, the dilemma was solved in the fourth by Cromwell's decision to condemn the King, notwithstanding his generosity. At the close of the play, the Queen escaped from England, crying aloud for vengeance, which she intended to seek in all quarters. France would combat the English, would defeat and crush them in the end. "I mean my tragedy to be the breviary of peoples and kings," he proudly informed his sister. "It is impossible for you not to find the plan superb. How the interest grows from scene to scene! The incident of Cromwell's sons is most happily invented. Charles's magnanimity in restoring to Cromwell his sons is finer than that of Augustus pardoning Cinna." In blowing his own trumpet Balzac was early an adept. To stimulate his imagination and reflection, he transferred his daily walk from the Jardin des Plantes to the Pere Lachaise Cemetery. "There I make," he explained, "studies of grief useful for my _Cromwell_. Real grief is so hard to depict; it requires so much simplicity." His garret had still its charm. "The time I spend in it will be sweet to look back upon," he said. "To live as I like, to work in my own way, to go to sleep conjuring up the future, which I imagine beautiful, to have Rousseau's Julie as a sweetheart, La Fontaine and Moliere as friends, Racine as a master, and Pere Lachaise as a promenade ground! Ah! if it could only last for ever!" His dreaming led him on to wider anticipations even than those of literary glory. "If I am to be a grand fellow (which, it's true, we don't yet know), I may add to my fame as a great author that of being a great citizen. This is a tempting ambition also."