fons et origo
/ˌfɒnzətˈɒrɪgəʊ/noun
- the source and origin of something源, 根源:
they recognized the sixties as the fons et origo of music as they knew it.
他们把60年代看做是他们所了解的音乐的起源。
词源
Latin, originally as fons et origo mali 'the source and origin of evil'.