Marcus Porcius Cato called Uticensis so opposed Caius Iulius Cæsar that Cato tried to block Cæsar from the office of consul by forcing Cæsar to choose between running for consul and celebrating a triumph. Cæsar instead gave up the triumph, ran for consul, and won.
Marcus Porcius Cato called Uticensis so opposed Caius Iulius Cæsar that he filibustered Cæsar’s land reform bill in the senate. Cæsar instead took the bill directly to a referendum, and won.
Marcus Porcius Cato called Uticensis so opposed Caius Iulius Cæsar that he refused to allow Cæsar to enter Italy as a private citizen. Cæsar instead entered Italy with an army, started the Civil War, and won.
Marcus Porcius Cato called Uticensis so opposed Caius Iulius Cæsar that, once the African campaign against Cæsar had been lost, he committed suicide rather than allow Cæsar to pardon him.
One wonders whether the Cato Institute, named (albeit indirectly) for Marcus Porcius Cato called Uticensis, considers self-defeating inflexibility a virtue or a vice.