In the 15 years prior to his death he work and wrote hard and extensively, and left both in Portuguese and English final digitized manuscripts which unfortunately he was unable to see published. In one of them, "Violence Origin"(1993) he proposed new approach and discussed many issues particularly those of Fromm, Toynbee, and Young related to the matter. "Violence Origin" was sent to several institutions including to the United Nations Organization in New York but he never got any answer from UNO.