I also agreed with him when he said that he had warned her against making impromptus too frequently, as such hasty verses are apt to sacrifice wit to rhyme.
"The Memoires of Casanova, Complete The Rare Unabridged London Edition Of 1894, plus An Unpublished Chapter of History, By Arthur Symons"
Jacques Casanova de Seingalt
"Ah," said Maltravers, "I have heard, indeed, some ugly old gentlemen with immense whiskers, and gestures of the most alarming ferocity, pour out their vehement impromptus; but I have never yet listened to a young and a handsome lady.
"Ernest Maltravers, Complete"
Edward Bulwer-Lytton
Drawing and music were pursued confessedly as amusements; and it would be difficult to mention any attainment whatsoever which Goethe had carried to a point of excellence in the years which he spent under his father's care, unless it were his mastery over the common artifices of metre and the common topics of rhetoric, which fitted him for writing what are called occasional poems and impromptus.
"Biographical Essays"
Thomas de Quincey