An example of ethos is when Cassius was writing letters to Brutus in order to appeal to him to join the conspirators.
"dear Brutus, is not in our stars,But in ourselves, that we are underlings.Brutus and Caesar: what should be in that 'Caesar'?Why should that name be sounded more than yours?" ~Cassius
"Which drizzled blood upon the Capitol;The noise of battle hurtled in the air,Horses did neigh, and dying men did groan,And ghosts did shriek and squeal about the streets.O Caesar! these things are beyond all use, And I do fear them." ~ Calpurnia
An example of pathos is when Calpurnia begs Caesar to stay home from the Capitol because of her night mare.
"If then that friend demand why Brutus rose against Caesar, this is my answer:--Not that I loved Caesar less, but that I loved Rome more. Had you rather Caesar were living and die all slaves, than that Caesar were dead, to live all free men?" ~Brutus
An example of Logos is when Brutus speaks to the commoners and tries to convince them that killing Caesar was necessary