[Footnote 266: The original source of information concerning Filelfo's quarrels with the Florentines is his Satires, divided into ten books or decades, each consisting of ten satires or hecatostichæ of one hundred verses each. In the copy of this book, printed at Paris, 1508, by Robert and John Gourmont, these virulent libels are called 'Divinum Francisci Philelphi Poetæ Christiani Satyrarum Opus.' As their motto the publishers give these sentences:--'Finis laus Deo, Spes mea Jesus.' For the abuse of the Medicean circle see Dec. i. Hec. 5; Dec. i. Hec. 6; Dec. ii. Hec. 1, 3, 7; Dec. iii. Hec. 10; Dec. vi. 10; Dec. viii. 5. For Filelfo's attack on Cosimo during his imprisonment, see Dec. iv. Hec. 1. For his invective against Cosimo on his return from exile, see Dec. iv. Hec. 9. For an appeal to Filippo Maria Visconti against Cosimo, see Dec. v. Hec. 1. For a similar appeal to Eugenius IV., see Dec. v. Hec. 2. For the episode of the assassin Filippo, see Dec. v. Hec. 6. A political attack on Cosimo addressed to Rinaldo Albizzi is contained in Dec. v. Hec. 8. A furious denunciation of Cosimo's tyranny, in Dec. v. Hec. 9. Palla degli Strozzi, as an opponent of Cosimo, is praised in Dec. iii. 1; Dec. vi. 4. In Dec. vii. 8, Filelfo promises to moderate his fury. In addition to these sources see the MS. invectives mentioned in Rosmini, vol. i. p. 47.] The occasion of Filelfo's removal to Siena was this:--When his position at Florence had become untenable, he received an invitation from Antonio Petrucci to lecture for two years, with a stipend of 350 florins. Filelfo replied that he preferred small pay and quiet to a larger income among the swords and poisons of his envious rivals. Accordingly he took up his abode at Siena for four years in the Piccolomini Palace. Like many greater and more admirable men, he had a restless disposition, always pleased with what is new, yet always grumbling when the taste of bitter mounted to his lips. The most honourable invitations now began to shower upon him. The Council of Basle, the Venetian Senate, the Emperor of the East, Eugenius IV., the Universities of Perugia and Bologna, and the Duke of Milan applied for his services. It was not, however, until the year 1439 that his love of change, combined with the allurements of higher pay, induced him to close with the offers of the Senate of Bologna. Once more, then, he crossed the Apennines, and once more, after a brief sojourn of a few months, he again quitted Bologna, and transferred himself to Milan. His reception by Filippo Maria Visconti was most flattering. Placing a diamond ring upon his finger, the Duke welcomed him among the nobles of his Court on New Year's Day in 1440. Thus began Filelfo's connection with the Lombard capital, which, though often interrupted, was never wholly broken till his death.