What does Brutus believe is more important than his personal feelings towards Caesar?

Brutus believes that the welfare of the Roman state is more important than his personal feelings towards Caesar. This is rooted in his philosophy of honor and duty; he prioritizes the greater good of Rome over his affection for Caesar. Brutus sees the potential for tyranny in Caesar's rise to power and fears that Caesar may not have the best interests of the republic at heart. His decision to participate in the conspiracy to assassinate Caesar stems from a belief that it is a necessary action to protect the freedom and integrity of Rome, demonstrating that his commitment to the state surpasses personal loyalty or friendship. This choice reflects his idealism and the moral dilemma he faces, illustrating the tensions between personal loyalty and civic duty that underpin the play.