"Of course, if I held the same view as Father Monchanin, you would be justified in suspecting me of deception. But you must remember that Father Monchanin was writing forty years ago and immense changes have taken place in the Church since then. The Vatican Council introduced a new understanding of the relation of the Church to other religions and all of us have been affected by this. Swami Abhishiktananda (Fr. le Saux) in particular early separated himself from Fr. Monchanin, especially after his profound experience with Raman Maharshi at Tiruvanamalai... you must realise also that the view which I hold is not peculiar to me. It is approved by the authorities of the Church both in India and in Rome. Many Catholics, of course, will not agree with it, but the understanding of the relation of the Church to other religions is only slowly growing and there are many different views in the Church today."
January 1, 1970
https://en.wikiquote.org/wiki/Christian_Ashram_Movement