The following is an excerpt from Gayl Welch's dissertation in which Martin was interviewed and one assumes knew of the following brief summary.
...(Martin Muller was) Born in Switzerland, grew up in a family that maintained a home for children in poor health. The home became a school where, from the age of nine, he was exposed to an environment dealing with problems of psychology, pedagogy, and health.
In the University, he studied under Piaget, Baudoin, and others, graduating with the equivalent to a masters degree in the United States. Then he sought and studied all he could find in Hindu and European mystical lore and occultism to broaden his traditional training.
Martin began teaching in Switzerland in 1941. By 1943, he was maintaining a home where people came to him for help and training. Working along rather classical lines at that time, he oriented the individual toward the deeper self. From 1948 to 1960, he developed a new approach which he began to write about.
When he and his wife and two children came to California in 1968, he not only left the mountains he loved to live in, he left all classical approaches to psychology. After settling near San Diego, he began working with groups of psychologists, people in therapy and people searching for a new mode of being. The writing about the technical training begun in Switzerland was refined, translated, and published in 1978 as Prelude to the New Man: An Introduction to the Science of Being.
The following is an excerpt from Wayland Myers's Dissertation of a conversation in which Martin provided some of his background:
Wayland: I think that it is important for us to establish something about your background and present situation - what you do.
Martin: Let's start with the background. I come from a family who had a home for children with weak health, and that home turned into a school. So I used to be faced since the age of nine with problems of psychology, pedagogy, health and so on. I later went through schools, finally got to the university. Later I studied a lot of nearly everything I could find in Hindu, and European mystical lore and occultism, and so on. In '41 I started to teach. In '43 I had a home and I saw people, and I oriented them towards their deeper self. I must say that at that time I followed pretty much the classical line. By this I mean tradition. Later on, somewhere between '47 and ‘60, I began to have new ideas of how to formulate, what I wanted to convey and little by little I left the tradition, until I came to this country and completely left tradition in Europe.
Wayland What was it you taught in Europe?
Martin I don't know how to express the teaching. I would say that it was a kind of development starting from the base of the personal psychology and moving towards deeper life. I would say that we went in the direction of that which is taught in any of the traditions of occultism/mysticism .....
He passed on in August of 1990.