WIST

A love of order, seemliness, and good taste has led the Anglican Church along a middle path between what a seventeenth-century divine called “the meretricious gaudiness of the Church of Rome and the squalid sluttery of fanatic conventicles.”

William Ralph Inge (1860-1954) English prelate [Dean Inge]
“Bishop Gore and the Church of England” (1908), Outspoken Essays, First Series (1919)
    (Source)

The reference is to "S. P. of Cambridge," believed to be the later Bishop Simon Patrick, who published in 1662 the pamphlet "A Brief Account of the new Sect of Latitude-men," lauding "that virtuous mediocrity which our Church observes between" the alternatives quoted by Inge. Reprinted in John Dunton, The Phenix, Vol. 2, ch. 4 (1707).