Mario D. Rucci … Was a teacher for 30 years: taught fine arts in High School and all subjects in Elementary School Retired from teaching in 2006, at the age of 60, to work fulltime on WORLD Worked on WORLD for 25 years, from 1994 (age 46) to 2018 (age 70) Over the course of his life Mario D. Rucci has been a painter, writer, teacher, computer expert, house builder, inventor, theoretical physicist, and philosopher – and he has excelled in whatever he happened to tackle.