 He also contributed the forewords to English editions of works by Titus Burckhardt, Frithjof Schuon, and others.Critchlow was a lecturer at the Architectural Association (AA) School of Architecture in London for twelve years.Whilst at the AA, he was invited to teach at Kwame Nkrumah University of Science and Technology in Ghana by R. Buckminster Fuller, the American engineer, architect and futurist.