Classicly

Fernando hated his son. From his earliest boyhood he had felt the sentiment of aversion, which, far from endeavoring to quell, he allowed to take deep root, until Ludovico's most innocent action became a crime, and a system of denial and resistance was introduced that called forth all of sinister that there was in the youth's character, and engendered an active spirit of detestation in his father's mind. Thus Ludovico grew, hated and hating. Brought together through their common situation, the father and son, lord and vassal, oppressor and oppressed, the one was continually ready to exert his power of inflicting evil, the other perpetually on the alert to resist even the shadow of tyranny. After the death of his mother, Ludovico's character greatly changed.