Sydney Smith adopts the persona of Peter Plymley to craft a series of letters that blend satire with policy argument. The opening letter immediately establishes a conversational, ironic tone: Plymley addresses his brother Abraham, a country clergyman, and chides him for opposing Catholic relief. Smith's diction is precise and deliberately provocative—he calls the anti-Catholic position "absurd" and "mischievous" before offering a detailed financial plan to pay Catholic clergy. The voice is that of a reasonable man forced to argue against unreason, a stance that recurs throughout the collection.

The Rhetoric of Reasonable Outrage

Smith's authorial choices in diction reveal a strategy of controlled indignation. He uses colloquial phrases like "genuine, good English just and necessary wars" to mock the cost of conflict, and he addresses his opponent Spencer Perceval with ironic formality: "Esq., of the parish of Hampstead." This juxtaposition of high and low registers—parliamentary language alongside everyday references—creates a tone of exasperated common sense. Smith also deploys rhetorical questions, such as "Can anything be more distressing than to see a venerable man pouring forth sublime truths in tattered breeches?" to evoke sympathy while undercutting the opposition's moral authority.

Concrete Numbers as a Satirical Weapon

Unlike many polemicists, Smith grounds his satire in specific figures. He calculates that 1,000 Catholic parishes could be supported for £190,000, plus £20,000 for bishops and £40,000 for schools—a total of £250,000, which he notes is "about the expense of three days of one of our genuine, good English just and necessary wars." This quantitative approach serves two purposes: it makes his proposal seem practical, and it exposes the disproportion of government spending. The detail that a priest earns £30 to £90 per year while a bishop gets up to £400 is presented without comment, letting the numbers argue for themselves.

The Irish Landscape as Evidence

Smith draws on geographical and demographic observations to support his case. He notes that in Connaught, Munster, and parts of Leinster, "the entire peasantry for sixty miles are Catholics" and that churches are "frequently shut for want of a congregation." The ratio of Catholics to Protestants in the diocese of Tuam is given as sixty to one. These details are not mere background; they function as evidence that the established church is a hollow presence. Smith's description of a "neat parish church" with only the parson and clerk, while a thousand Catholics gather in a "miserable hovel," is a vivid contrast that underscores the absurdity of the status quo.

The Persona of Peter Plymley

Smith's choice to write under a pseudonym allows him to adopt a distinct character: Plymley is a layman, not a clergyman, which lets him criticize church policy without appearing self-interested. He addresses his brother Abraham as a fellow Anglican, creating an intimate, epistolary frame that invites the reader into a private debate. Plymley's voice is that of a practical, slightly exasperated gentleman who values common sense over dogma. This persona enables Smith to make radical proposals—such as placing Catholic patronage in the hands of the Crown—while maintaining an air of moderate reason. The letters thus function as both argument and performance.

Readers approaching these letters should attend to the interplay between Smith's satirical persona and his policy arguments. The wit is never ornamental; it serves to expose hypocrisy and to make the case for Catholic emancipation feel like simple common sense. The essays that follow the letters extend this approach to other topics, but the Plymley sequence remains the most concentrated example of Smith's method: to argue fiercely while seeming to smile.