With this goal, he developed and recorded modern Greek, which are the first language courses in Pimsleur. This is his many years of teaching, a test of a new theory of self-education Institute of Linguistics and Psycholinguistics generated, especially on how to best stimulate memories implanted a new language test. In 1970, he had tried on its own to promote his language tapes, but without success, so he put these tapes gave the Curriculum Development Center of Philadelphia, Charles and Beverly Heinle. In 1976, he served as a visiting professor at the Sorbonne during, died suddenly in France, until 1980, it was the first time the course for consumer sales. Harvard University Bookstore set up a listening booth for future learners in buying a course before being able to experience and understand how Pimsleur’s methods.