He had taken part in a General Council of the Church, and knew thinkers as widely divergent as Giovanni Dominici and AEneas Sylvius Piccolomini. He was, therefore, more likely than most to have heard whatever theories were proposed by the various great political statesmen of Europe, whether they were churchmen or lawyers. Consequently, his schemes, as we might well expect, are startlingly advanced. He begins by attacking the growing spirit of usury, and the resulting idleness. Men were finding out that under the new conditions which governed the money market it was possible to make a fortune without having done a day's work. The sons of the aristocracy of Florence, which was built up of merchant princes, and which had amassed its own fortunes in honest trading, had been tempted by the bankers to put their wealth out to interest, and to live on the surplus profit. The ease and security with which this could be done made it a popular investment, especially among the young men of fashion who came in, simply by inheritance, for large sums of money. As a consequence Florence found itself, for the first time in its history, beginning to possess a wealthy class of men who had never themselves engaged in any profession. The old reverence, therefore, which had always existed in the city for the man who laboured in his art or guild, began to slacken. No longer was there the same eagerness noticeable which used to boast openly that its rewards consisted in the consciousness of work well done. Instead, idleness became the badge of gentility, and trade a slur upon a man's reputation. No city can long survive so listless and languid an ideal. The Archbishop, therefore, denounced this new method of usurious traffic, and hinted further that to it was due the fierce rebellion which had for a while plunged Florence into the horrors of the Jacquerie. Wealth, he taught, should not of itself breed wealth, but only through the toil of honest labour, and that labour should be the labour of oneself, not of another.