Fons et origo is a Latin term meaning "source and origin".OED "fons et origo": "The source and origin (of something) Typical usage of the term describes Athens as the fons et origo of democracy, or Italy as the fons et origo of classical music.
网络释义
1、拉丁语〕本源
...呼其德王根苏木 huqid wanggin sum〔拉丁语〕本源，根源。 fons et origo崩溃的根源 origins of the crash ...