A polemic is a strong verbal or written attack on someone or something. Ever since Mary Baker Glover (Eddy) began to write and teach the discovery of what she termed the Science of Christ in the mid-to-late nineteenth century, her words and works have been controversial. The writings of antagonists and the response to them comprise part of the history of Christian Science. Before the opening of the Mary Baker Eddy Library, researchers and authors relied heavily on these recycled polemic writings because they were denied access to the Church archives and had little else to rely on. The compilers of the annotations for the ABCS website have assembled those polemic writings that were most influential in public thought.