Final answer:
The quote is spoken by Marc Antony in Shakespeare's play Julius Caesar; it highlights Caesar's traits and Antony's clever use of rhetoric to sway the Roman people against the conspirators.
Step-by-step explanation:
The quote, "As Caesar loved me, I weep for him; as he was fortunate, I rejoice at it; as he was valiant, I honor him; but as he was ambitious, I slew him" is spoken by the character Marc Antony in William Shakespeare's play, Julius Caesar. This line is from Antony's famous speech which he delivers to the Roman public at Caesar's funeral. The speech is a pivotal moment in the play, where Antony reveals his true feelings about Caesar and his assassins while addressing the crowd.
The context of the quote reflects the complexities of Julius Caesar's character and Antony's crafty persuasion to turn the public's opinion against the conspirators, particularly Brutus who was known for his noble demeanor and was initially thought to have killed Caesar for the good of Rome due to his supposed ambition.