definition of what is a church (not of something fantastic which we would wish it to be, but of what it is and has been in reality)—a church is a body of men who claim for themselves that they are in complete and sole possession of the truth. And these bodies, having in course of time, aided by the support of the temporal authorities, developed into powerful institutions, have been the principal obstacles to the diffusion of a true comprehension of the teaching of Christ)
It could not be otherwise. The chief peculiarity which distinguished Christ's teaching from previous religions consisted in the fact that those who accepted it strove ever more and more to comprehend and realize its teaching. But the Church doctrine asserted its own complete and final comprehension and realization of it.
Strange though it may seem to us who have been brought up in the erroneous view of the Church as a Christian institution, and in contempt for heresy, yet the fact is that only in what was called heresy was there any true movement, that is, true Christianity, and that it only ceased to be so when those heresies stopped short in their movement and also petrified into the fixed forms of a church,
And, indeed, what is a heresy? Read all the theological works one after another. In all of them heresy is the subject which first presents itself for definition; since every theological work deals with the true doctrine of Christ as distinguished from the erroneous doctrines which surround it, that is, heresies. Yet you will not find anywhere anything like a definition of heresy.
The treatment of this subject by the learned historian of Christianity, E. de Pressensd, in his " Histoire du Dogme"
(Paris, 1869), under the heading "Ubi Christus, ibi Ecclesia," may serve as an illustration of the complete absence of anything like a definition of what is understood
