The real difficulty in defining a Christian conscience is that it is neither collective nor individual. It is personal, and it is a communion of saints.
From the point of view of prayer, when I say conscience, I am talking of this consciousness that is deeper than the moral conscience. When I pray, I am no longer talking to God or myself loved by God. When I pray, the Church prays in me. My prayer is the prayer of the Church.
This does not apply only to liturgy: it applies also to private prayer because I am a member of Christ. If I am going to pray validly and deeply, it will be with a consciousness of myself as being more than just myself when I pray. In other words, I am not just an individual when I pray, and I am not just an individual with grace when I pray. When I pray, I am in a certain sense, everybody. The mind that prays in me is more than my own mind, and the thoughts that come up in me are more than my own thoughts because this deep consciousness when I pray is a place of encounter between myself and God and between the common love of everybody. It is the common will and love of the Church meeting with my will and God's will in my consciousness and conscience when I pray.