Example of Cassius being fearful.

As the leader of the audacious plot against Caesar, it is hard to call Cassius "fearful." He is a brave, if also conspiratorial and somewhat cynical, character. Perhaps one instance in the play where Cassius says that he feels fear is when Antony asks to be allowed to speak after the murder of Caesar. Cassius says to Brutus, "I know not what may fall, I like it not." He fears that Antony will in some way use the opportunity to speak against the conspirators. As it turns out, this fear is entirely justified; Antony does exactly that. Cassius also fears a series of omens before the battle of Philippi, which takes place on his birthday and is itself a bad sign. But he resolves, despite these concerns, to fight anyway. As it turns out, again, he was right to be afraid, and the army of Octavian and Antony emerges victorious. So Cassius's fears are, throughout the play, perhaps better described as legitimate concerns. Nevertheless, he follows through on his actions until the bitter end.