Thanks to a French Canadian gentleman of the Resistance, here is a translated into English extract of a conference given by the saintly Archbishop Marcel Lefebvre on April 11, 1990 in Econe, Switzerland. This extract is from the second part of the conference, which deals with the Novus Ordo Missae.
In addition, two audio extracts are provided below, courtesy of the same French Canadian gentlemen, of the same conference (in French) given by Archbishop Lefebvre.
1. The Novus Ordo Missae
2. The Liturgical Reform
It is clear from the Archbishop’s words that he would not give permission for one to positively assist at the Novus Ordo Missae for any reason whatsoever, unlike what Bishop Richard Williamson did, as demonstrated in this post.