Luther is thus emancipated from the ideas of the Middle Ages and of the old Syriac monks and of the Jewish Pharisees. In his deliverance he has new hopes and aspirations; he becomes cheerful, and devotes himself to his studies. Nothing can make a man more cheerful and joyful than the cordial reception of a gift which is infinite, a blessing which is too priceless to be bought. The pharisee, the monk, the ritualist, is gloomy, ascetic, severe, intolerant; for he is not quite sure of his salvation. A man who accepts heaven as a gift is full of divine enthusiasm, like Saint Augustine. Luther now comprehends Augustine, the great doctor of the Church, embraces his philosophy and sees how much it has been misunderstood. The rare attainments and interesting character of Luther are at last recognized; he is made a professor of divinity in the new university, which the Elector of Saxony has endowed, at Wittenberg. He becomes a favorite with the students; he enters into the life of the people. He preaches with wonderful power, for he is popular, earnest, original, fresh, electrical. He is a monk still, but the monk is merged in the learned doctor and eloquent preacher. He does not yet even dream of attacking monastic institutions, or the Pope; he is a good Catholic in his obedience to authorities; but he hates the Middle Ages, and all their ghostly, funereal, burdensome, and technical religious customs. He is human, almost convivial,--fond of music, of poetry, of society, of friends, and of the good cheer of the social circle. The people love Luther, for he has a broad humanity. They never did love monks, only feared their maledictions. About this time the Pope was in great need of money: this was Leo X. He not only squandered his vast revenues in pleasures and pomps, like any secular monarch; he not only collected pictures and statues,--but he wanted to complete St. Peter's Church. It was the crowning glory of papal magnificence. Where was he to get money except from the contributions of Christendom? But kings and princes and bishops and abbots were getting tired of this everlasting drain of money to Rome, in the shape of annats and taxes; so Leo revived an old custom of the Dark Ages,--he would sell "plenary indulgences"; and he sent his agents to market them in every country.