66 We are fully aware that it is the intention of the Council to consider and investigate this special and important aspect of the Church's life, and We have no wish to steal its thunder. The Council Fathers must be free to discuss these subjects in detail. Our only concern, Venerable Brethren, is to propose certain points for your consideration before the beginning of the third session, so that we may all gain a clearer understanding of the compelling motives for the Church's dialogue, the methods to be followed and the end in view. Our purpose is to win souls, not to settle questions definitively.
Source: Ecclesiam Suam (Vatican.va)