John Mair, better known by his Latin name, Major, was professor of philosophy and theology at Glasgow, when Knox attended the university. The minds of young men, and their future train of thinking, often receive an important direction from the master under whom they are educated, especially if his reputation be high. Major was at that time deemed an oracle in the sciences which he taught; and as he was the preceptor of Knox, and of the celebrated scholar Buchanan,[14] it may be proper to advert to some of his opinions. He had received the greater part of his education in France, and acted for some time as a professor in the university of Paris, where he acquired a more liberal habit of thinking and expressing himself on certain subjects, than was yet to be met with in his native country, and in other parts of Europe. He had imbibed the sentiments concerning ecclesiastical polity, maintained by John Gerson and Peter D’Ailly, who so ably defended the decrees of the Council of Constance, and the liberties of the Gallican church, against the advocates for the uncontrollable authority of the Sovereign Pontiff. He taught that a General Council was superior to {8} the pope, and might judge, rebuke, restrain, and even depose him from his dignity; denied the temporal supremacy of the bishop of Rome, and his right to inaugurate or dethrone princes; maintained that ecclesiastical censures, and even papal excommunications, had no force, if pronounced on irrelevant or invalid grounds; he held that tithes were not of divine right, but merely of human appointment; censured the avarice, ambition, and secular pomp of the court of Rome, and of the Episcopal order; was no warm friend of the regular clergy; and advised the reduction of monasteries and holidays.[15] His opinions respecting civil governments were analogous to those which he held as to ecclesiastical polity. He taught that the authority of kings and princes was originally derived from the people; that the former are not superior to the latter, collectively considered; that if rulers become tyrannical, or employ their power for the destruction of their subjects, they may lawfully be controlled by them, and proving incorrigible, may be deposed by the community as the superior power; and that tyrants may be judicially proceeded against, even to capital punishments.[16]