Topic summary
Opus Tertium
Extracted from the Wikipedia article Roger Bacon.
Life
Roger Bacon was born in Ilchester in Somerset, England, in the early 13th century. His birth is sometimes narrowed down to 1210, 1213 or 1214, 1215 or 1220. The only source for his birth date is a statement from his 1267 Opus Tertium that "forty years have passed since I first learned the Alphabetum". The latest dates assume this referred to the alphabet itself, but elsewhere in the Opus Tertium it is clear that Bacon uses the term to refer to rudimentary studies, the trivium or quadrivium that formed the medieval curriculum. His family appears to have been well off.