He founded the City of Peace Foundation in Brazil in 1986, and the International Holistic University of Brasilia (UNIPEACE), of which he was the director.
In 2000, Weil received an honourable mention for the UNESCO Prize for Peace Education.Weil was the author of more than 40 books.
His book O Corpo Fala ("The Body Speaks") went through more than 60 editions in Brazil.