The line " I have the same dagger for myself, when it shall please my country to need my death." (Act 3 scene 2 page 62) shows ethos as brutus is proving his character by saying that he would die for his country if he needed to.
Brutus says the line "If there be any in this assembly, any dear friend of Caesar's, to him I say, that Brutus' love to Caesar was no less than his." (act 3 scene 2 page 61)showing pathos as he i saying the he loved Caesar like anyone else.
Logos was shown in the line "Not that I loved Caesar less, but that I loved Rome more" as Brutus was stating that he simply loved Rome more than Caesar as a fact.