[54] Mr. Perkins mentions eight or ten proofs of witchcraft, two only
of which he supposes sufficient, viz.: the testimony of two witnesses
and the confession of the party. This authority probably had weight
with the court as well as with Mr. Hale; but Perkins says it is
objected to the latter that a confession may be urged by force or
threatening, &c., or by a persuasion that it is the best course to save
life or obtain liberty.