The most eminent survivor of the Greek clergy, Gennadius, was sought for. He had been sold as a slave after the sack of the city to a pasha at Adrianople. He was brought back to Constantinople and was invested by the Sultan with the office of Patriarch of the Greek Church. Mahomet, in doing so, said: “I appoint you Patriarch. May Heaven protect you. In all cases and all occasions count on my friendship and enjoy in peace all the privileges of your predecessors.” This was a most wise and opportune act of policy. The Sultan had been advised by fanatics among the Turks to order a general massacre of Greeks and others who would not embrace Islam. Mahomet’s record shows that he would have sanctioned this if he had thought it for the interest of the State, and he would probably have revelled in it. In pursuance of a deliberate policy of enlightened statecraft he rejected this advice. It was necessary to repeople his capital and to attract others than Turks to it. Mahomet was also ambitious of further conquests in Europe. He recognized that the attempt to force a wholesale change of religion on the vanquished would stimulate their resistance, while a wise tolerance might weaken it. When the Prince of Serbia asked Hunyadi, the Hungarian patriot, what he would do with the Orthodox Greek Church if he made himself master of that province, the reply was, “I will establish everywhere Catholic churches.” The reply of Mahomet to a similar question was, “By the side of every mosque a church shall be erected in which your people will be able to pray.” This great act of tolerance of Mahomet was far ahead of the political ethics of the Christian Powers of Europe at that time. His example was not followed by the Spaniards, when they drove from their country the Moslem Moors, who had refused to adopt the religion of their victors. The action of Mahomet is another proof that the Turkish invasion of Europe was not actuated by religious fanaticism or the desire to spread Islam. There seems to have been no attempt to induce or compel the Greeks and others of the conquered city to embrace Islam. Mahomet also set to work, at an early date, to repeople Constantinople. For a long time previous to the conquest its population had been dwindling. In proportion as the Greek Empire was reduced by the loss of its territories, so the importance of the capital was diminished. Mahomet invited all who had fled after the capture to return, promising protection to their property and religion. He directed the transfer of families of Greeks, Jews, and Turks from many parts of his Empire. When he took possession of Trebizond and the Morea, many thousands of Greeks were forcibly removed to Constantinople. The same was the case with many islands in the Ægean Sea. At the end of his reign Constantinople was far more populous and flourishing than it had been under the last Greek Emperor.