What does Errare est humanum mean?
“To err is human, (but) to persist is diabolical.”A maxim meaning that to make mistakes is a common (and by implication forgivable) human attribute, but to persist in making the same mistake is a personal or moral flaw (and by implication less forgivable).
Who said Errare humanum est?
"Errare humanum est, perseverare autem diabolicum"-Lucius Annaeus Seneca, 4 BC to 45 AD.