The Quaker Colonies-A Chronicle of the Proprietors of the Delaware is a classic American religious history text by Sydney G. Fisher. Quakerism was one of the many religious sects born in the seventeenth century under the influence of Puritan thought. The foundation principle of the Reformation, the right of private judgment, the Quakers carried out to its logical conclusion; but they were people whose minds had so long been suppressed and terrorized that, once free, they rushed to extremes. They shocked and horrified even the most advanced Reformation sects by rejecting Baptism, the doctrine of the Trinity, and all sacraments, forms, and ceremonies. They represented, on their best side, the most vigorous effort of the Reformation to return to the spirituality and the simplicity of the early Christians.