In regards to Est and Errare humanum est

1. What does Errare est humanum mean?
2. Who said Errare humanum est?

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.