After 5 years lurking just registered in order to ask you; understand.." errare humanum est"...what is meaning of "in errore perservare stultum"? C student in Latin, here. Thanks, much.
Glad I was able to get you to register!
From the little that I know, "in errore perservare stultum" means "to persevere in error is stupidity."
"Errare humanum est, in errore perservare stultum." is from Seneca. Translated it means "It is human to make a mistake, it is stupid to persist in it."