The conspirators charge Caesar with ambition, and his behavior substantiates this judgment: he does vie for absolute power over Rome, reveling in the homage he receives from others and in his conception of himself as a figure who will live on forever in men’s minds. However, his faith in his own permanence—in the sense of both his loyalty to principles and his fixture as a public institution—eventually proves his undoing. At first, he stubbornly refuses to heed the nightmares of his wife, Calpurnia, and the supernatural omens pervading the atmosphere. Though he is eventually persuaded not to go to the Senate, Caesar ultimately lets his ambition get the better of him, as the prospect of being crowned king proves too glorious to resist.
Caesar’s conflation of his public image with his private self helps bring about his death, since he mistakenly believes that the immortal status granted to his public self somehow protects his mortal body. Still, in many ways, Caesar’s faith that he is eternal proves valid by the end of the play: by Act V, scene iii, Brutus is attributing his and Cassius’s misfortunes to Caesar’s power reaching from beyond the grave. Caesar’s aura seems to affect the general outcome of events in a mystic manner, while also inspiring Octavius and Antony and strengthening their determination. As Octavius ultimately assumes the title Caesar, Caesar’s permanence is indeed established in some respect.