"I am now, and have been from my youth, a member and a minister of the Church of England. And I have no desire nor design to separate from it till my soul separates from my body. Yet if I was not permitted to remain therein without omitting what God requires me to do, it would then become meet, and right, and my bounden duty to separate from it without delay. To be more particular, I know God has committed to me a dispensation of the gospel. Yea, and my own salvation depends upon preaching it: 'Woe is me if I preach not the gospel.' If then I could not remain in the church without omitting this, without desisting from the gospel, I should be under a necessity of separating from it, or losing my own soul. In like manner, if I could not continue to unite with any smaller society, church, or body of Christians, without committing sin, without lying and hypocrisy, without preaching to other doctrines which I did not myself believe, I should be under an absolute necessity of separating from that society. And in all these cases the sin of separation, with all the evils consequent upon it, would not lie upon me, but upon those who constrained me to make that separation by requiring of me such terms of communion as I could not in conscience comply with."
John Wesley, Sermon 75 On schism, as quoted by William J. Abraham, in "United Methodists at the end of the mainline," First things no. 84 (June-July 1998): 32 (23-33).