An Apology for the True Christian Divinity is Robert Barclay's systematic defense of the Religious Society of Friends. In tightly argued propositions supported by Scripture, reason, and early Christian testimony, it expounds the inward Light of Christ, the primacy of immediate revelation, and the inwardness of baptism and the Supper. It clarifies Quaker worship, ministry, and testimonies while answering standard objections. Composed amid seventeenth-century strife and dedicated to Charles II, its scholastic clarity serves a pastoral, reforming aim. Barclay, a Scotsman of Ury educated at the Scots College, Paris, embraced Quakerism young and brought classical training to the task. Fluent in Latin, he issued the work first in that language in 1676 and soon in English in 1678. Imprisonments for conscience-especially at Aberdeen-and friendship with William Penn sharpened his appeal to magistrates and divines, furthered by his father's late-life conversion. Students of early modern theology and church history will find a lucid gateway to Quaker divinity. Whether seeking a classic on Scripture and Spirit, a case study in toleration, or an exemplar of irenic polemic, readers will be rewarded. It remains indispensable for understanding conscience, worship, and discipline in the most durable stream of the Radical Reformation. Quickie Classics summarizes timeless works with precision, preserving the author's voice and keeping the prose clear, fast, and readable-distilled, never diluted. Enriched Edition extras: Introduction · Synopsis · Historical Context · Brief Analysis · 4 Reflection Q&As · Editorial Footnotes.