Journal lines without French mottos (7)
I believe the answer is:
slogans
'french mottos' is the definition.
'slogans' can be an answer for 'mottos' ('slogan' can be a synonym of 'motto'). I'm not sure about the 'french' bit.
'journal lines without' is the wordplay.
'journal' becomes 'log' (I've seen this in another clue).
'lines' indicates putting letters inside (inserted letters line the inside of others).
'without' becomes 'sans' (I've seen this in another clue).
'log' going into 'sans' is 'SLOGANS'.
Can you help me to learn more?
(Other definitions for slogans that I've seen before include "Advertising phrases" , "Campaign messages" .)