Caleb the Prolific Quaker Writer

Caleb's name appears constantly in the minutes of the Society of Friends among those who were most active in settling difficulties and in promoting deeds of benevolence. He frequently appeared in the ministry, and as a controversialist and writer, and was known as one of the ablest and most noted of his sect in his day.  His reply to Daniel Leeds was liberally subscribed for my meetings, and was widely circulated. He was an intimate friend of George Keith, but, when the latter attacked the Quaker doctrines, Pusey was active among those who pronounced against him. From Pusey, Smith, the early historian, obtained much of the material from which he made up his manuscript history, which later formed the basis of Robert Proud's two volume "History of Pennsylvania". In 1697 Pusey was chosen by the Quakers to be one of the committee to examine all books that the society proposed to publish, which post he held till his death.

Among his published writings are "A Serious and Seasonable Warning unto all People occasioned by two most Dangerous Epistles to a late Book of John Fall-doe's" , addressed to the people called Anthony Palmer's Church (London 1675); "A modest Account from Pennsylvania of the Principal Differences in Point of Doctrine between George Keith and those of the People called Quakers" (1696); "Satan's Harbinger encountered; His False News of a Trumpet detected," etc., a reply to Daniel Leed's "News of a Trumpet Sounding in the Wilderness " Philadelphia, 1700); "Daniel Leeds Justly rebuked for abusing William Penn, and his Folly and Falsehoods contained in his Two Printed Challenges to Caleb Pusey made Manifest" (1702); "George Keith once more brought to the Test, and proved a Prevaricator" (1703); "Proteus Ecclesiasticus, or George Keith varied in Fundamentals" (1703); "The Bomb searched and found stuff'd with False Ingredients, being a Just Confutation of an Abusive Printed Half-Sheet, call'd a Bomb, originally published against the Quakers, by Francis Bugg" (1705); "Some Remarks upon a Late Pamphlet signed part by John Talbot and part by Daniel Leeds, called "the Great Mystery of Fox-Craft" (1705) and "Some Observations made on Daniel Leeds, his Book entitled "The Second Part of the Mystery of Fox-Craft" (1706).

Far a fuller account of the titles of these works, see "Issues of the Pennsylvania Press, 1685-1784," by Charles R. Hildeburn (1885) The imprint of Pusey's works, excepting the first two and the last, bear the name of Reynier Jansen, the Philadelphia Printer.​