A thorough look at the German "so", its various idiomatic uses in everyday German and the differences to English "so". With lots of audio examples.
The core idea of this root was:
apart, separated, by oneself
It’s the origin of English asunder as well as the imports sans (without) and sin (without) as in chili sin carne.
On the German side, we have two very important offspring – sich and sondern.