The term 'sibi persuasit' translates to 'he persuaded himself' in English. It combines the reflexive pronoun 'sibi', meaning 'to himself', with the verb 'persuasit', which means 'he persuaded'. This phrase highlights the use of reflexive pronouns in Latin, which are essential for indicating actions that are directed back to the subject, adding depth to the understanding of personal influence and self-conviction in actions and decisions.