This character nevertheless differed widely according to the individual. Many speeches breathe a spirit of true eloquence, especially those which keep to the matter treated of; of this kind is the mass of what is left to us of Pius II. The miraculous effects produced by Giannozzo Manetti[562] point to an orator the like of whom has not been often seen. His great audiences as envoy before Nicholas V. and before the Doge and Council of Venice were events not to be soon forgotten. Many orators, on the contrary, would seize the opportunity, not only to flatter the vanity of distinguished hearers, but to load their speeches with an enormous mass of antiquarian rubbish. How it was possible to endure this infliction for two and even three hours, can only be understood when we take into account the intense interest then felt in everything connected with antiquity, and the rarity and defectiveness of treatises on the subject at a time when printing was but little diffused. Such orations had at least the value which we have claimed (p. 232) for many of Petrarch’s letters. But some speakers went too far. Most of Filelfo’s speeches are an atrocious patchwork of classical and biblical quotations, tacked on to a string of commonplaces, among which the great people he wishes to flatter are arranged under the head of the cardinal virtues, or some such category, and it is only with the greatest trouble, in his case and in that of many others, that we can extricate the few historical notices of value which they really contain. The speech, for instance, of a scholar and professor of Piacenza at the reception of the Duke Galeazzo Maria, in 1467, begins with Julius Cæsar, then proceeds to mix up a mass of classical quotations with a number from an allegorical work by the speaker himself, and concludes with some exceedingly indiscreet advice to the ruler.[563] Fortunately it was late at night, and the orator had to be satisfied with handing his written panegyric to the prince. Filelfo begins a speech at a betrothal with the words: ‘Aristotle, the peripatetic.’ Others start with P. Cornelius Scipio, and the like, as though neither they nor their hearers could wait a moment for a quotation. At the end of the fifteenth century public taste suddenly improved, chiefly through Florentine influence, and the practice of quotation was restricted within due limits. Many works of reference were now in existence, in which the first comer could find as much as he wanted of what had hitherto been the admiration of princes and people.