CAPTAIN CHARLES CORBOULD WALKER
ARGYLL AND SUTHERLAND HIGHLANDERS
26TH AUGUST 1914 AGE 39
BURIED: LE CATEAU MILITARY CEMETERY, FRANCE
The words translate as 'a mind conscious of rectitude'. The full quote from Vergil's Aeniad 1.604, 'mens sibi conscia recti', translates as 'the mind in itself and for itself conscious of its own rightness', the implication being that in your own mind you know that you have done right.