P. V. N. Myers, A General History for Colleges and High Schools…
“ These festivals, as in the case of those of the Greeks, had their origin in the belief that the gods delighted in the exhibition of feats of skill, strength, or endurance; that their anger might be appeased by such spectacles; or that they might be persuaded by the promise of games to lend aid to mortals in great emergencies. At the opening of the year it was customary for the Roman magistrate, in behalf of the people, to promise to the gods games and festivals, provided good crops, protection from pestilence, and victory were granted the Romans during the year. ”
