""The Doctrine and Principles of the People Called Quakers, Explained and Vindicated"" is a comprehensive guide to the beliefs and practices of the Quaker religion. Written by Thomas Willis, a prominent Quaker leader in the 18th century, the book covers a wide range of topics, including the Quaker view of God, the Bible, and the role of the individual in society. Willis also addresses controversial issues such as war, slavery, and the use of oaths,...