The correspondence of a writer, a philosopher, often reveals itself beyond peculiar general views. Such is the case with this correspondence of Itsuo Tsuda from which we publish a few letters, courtesy of Andréine and Bernard Bel. It reveals answers given by Itsuo Tsuda, between 1972 and 1979, to this young couple as they began practicing the regenerating movement. Through these letters we will follow their desire to make this discovery widely known.