As the Delphic oracle was the object to which the principal duties of the Amphictyons related, it might have been imagined to have been under their control, and thus to have afforded them an engine by which they might, at least secretly, exert a very powerful influence over the affairs of Greece. But though this engine was not unfrequently wielded for political purposes, it appears not to have been under the management of the council, but of the leading citizens of Delphi, who had opportunity of constant and more efficacious access to the persons employed in revealing the supposed will of the god. In early times the oracle was often consulted, not merely for the sake of learning the unknown future, but for advice and direction, which, as it was implicitly followed, really determined the destiny of those who received it. The power conferred by such an instrument was unbounded; and it appears, on the whole, not to have been ill applied: but the honour of its beneficial effects must be ascribed almost entirely to the wisdom and patriotism of the ruling Delphians or of the foreigners who concerted with them in the use of the sacred machinery. But the authority of the oracle itself was gradually weakened, partly by the progress of new opinions, and partly by the abuse which was too frequently made of it. The organ of the prophetic god was a woman, of an age more open to bribery than to any other kind of seduction;[13] and, even before the Persian wars, several instances occurred in which she had notoriously sold her answers. The credulity of individuals might notwithstanding be little shaken: but a few such disclosures would be sufficient to deprive the oracle of the greater part of its political influence. NATIONAL FESTIVALS The character of a national institution, which the Amphictyonic council affected, but never really acquired, more truly belonged to the public festivals, which, though celebrated within certain districts, were not peculiar to any tribe, but were open to all who could prove their Hellenic blood.[b] [Illustration: GREEK DANCING GIRL (After Hope)]