The only definition of heresy (the word ἁίρεσις means _part_) is the name given by an assembly of men to every judgment which rejects part of the teaching, as professed by the assembly. A more particular meaning, which more frequently than any other is ascribed to heresy, is that of an opinion which rejects the church doctrine, as established and supported by the worldly power. There is a remarkable, little known, very large work (_Unpartheyische Kirchen und Ketzer-Historia_, 1729), by Gottfried Arnold, which treats directly on this subject and which shows all the illegality, arbitrariness, senselessness, and cruelty of using the word "heresy" in the sense of rejection. This book is an attempt at describing the history of Christianity in the form of a history of the heresies. In the introduction the author puts a number of questions: (1) regarding those who make heretics (_von den Ketzermachern selbst_); (2) concerning those who were made heretics; (3) concerning the subjects of heresy; (4) concerning the method of making heretics, and (5) concerning the aims and consequences of making heretics. In connection with each of these points he puts dozens of questions, answers to which he later gives from the works of well-known theologians, but he chiefly leaves it to the reader himself to make the deduction from the exposition of the whole book. I shall quote the following as samples of these questions, which partly contain the answers. In reference to the fourth point, as to how heretics are made, he says in one of his questions (the seventh): "Does not all history show that the greatest makers of heretics and the masters of this work were those same wise men from whom the Father has hidden His secrets, that is, the hypocrites, Pharisees, and lawyers, or entirely godless and corrupt people?" Questions 20 and 21: "And did not, in the most corrupt times of Christianity, the hypocrites and envious people reject those very men who were particularly endowed by God with great gifts, and who in the time of pure Christianity would have been highly esteemed? And, on the contrary, would not these men, who during the decadence of Christianity elevated themselves above everything and recognized themselves to be the teachers of the purest Christianity, have been recognized, in apostolic times, as the basest heretics and antichristians?" Expressing in these questions this thought, among others, that the verbal expression of the essence of faith, which was demanded by the church, and a departure from which was considered a heresy, could never completely cover the world-conception of the believer, and that, therefore, the demand for an expression of faith by means of particular words was the cause of heresy, he says, in Questions 21 and 33: