Simultaneously he studied language acquisition and pedagogy at Justus Liebig University Giessen, and earned his Ph.D. there in 1985.

[3] The method became widely used in Germany in secondary education, and in the 1990s it was further formalized and began to be used in universities as well, and has spread to other disciplines and other countries worldwide.

[4] By 2008 Martin had retired, and although he remained active Joachim Grzega, Isabelle Schuhladen and Simon Wilhelm Kolbe took the lead in developing and promulgating LdL.

[5] The "New Human Rights" contain an anthropological, an ethical and a political part, based on the following needs: 1. thinking, 2. health, 3. security, 4. social inclusion, 5. self-fulfilment and participation, 6. meaning.

[7] Finally, Simon Wilhelm Kolbe has founded a series "New Human Rights" in the Gabriele Schäfer Verlag, which already comprises several volumes.