Many of those who come to the Church after some years of the faithful service of God in one of the separated Churches express the hope that they will be able, from their knowledge and experience, to make a particular contribution to the re-union of Christendom. Since they know both the Church and one or other of the separated bodies more or less closely related to it, from the inside, they hope that they will be able to help forward the day of reconciliation between the two. How far are such hopes justified? Many of us know people who have had expectation such as these and who have been disappointed; and do are indeed some converts, well-known in the Church, who do not appear to have been able to work for the return of their former brethren in the way others, perhaps, imagined they would be able to do. Does being a convert necessarily imply usefulness in this field?