The schism stops the German, but he always moves on (7)
I believe the answer is:
drifter
'he always moves on' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'the schism stops the german' is the wordplay.
'the schism' becomes 'rift' (I've seen this before).
'stops' means one lot of letters goes inside another.
'the german' becomes 'der' ('the' in German).
'rift' inserted within 'der' is 'DRIFTER'.
'but' is the link.
Can you help me to learn more?
(Other definitions for drifter that I've seen before include "Vagabond" , "Wanderer; fishing vessel" , "One who moves about aimlessly" , "one unsettled" , "tramp, perhaps" .)