The Kingdom of God is Within You by Leo Tolstoy Chapter 3 Page 30

disputing, who each called the other side heresy, and recognized their own side only as the infallible church.

If we knew that there was a church which decided in the year 51 to receive the uncircumcised, it is only so because there was another church — of the Judaists — who decided to keep the uncircumcised out.

If there is a Catholic Church now which asserts its own infallibility, that is only because there are churches — Greco-Russian, Old Orthodox, and Lutheran — each asserting its own infallibility and denying that of all other churches. So that the one Church is only a fantastic imagination which has not the least trace of reality about it.

As a real historical fact there has existed, and still exist, several bodies of men,