Hi Tom. Something is not right here. In ancient Greek there were different kinds of accents, like οξεία (′), βαρεία (‵) και περισπωμένη(~) So, I'm not sure exactly how that phrase was written in ancient Greek, but in contemporary Greek it should be "και αρχή και τέλος νους" There's a case in contemporary Greek where a word with a lot of syllables can have two accents, e.g. "το αυτοκίνητο" can become "το αυτοκίνητό μου" -- but maybe someone else can explain the grammar here. :)