Though he was let out of prison he was not yet a free man. For some twelve weeks longer he remained a prisoner in his own house, the bond for eighteen hundred gold crowns having doubtless been given on this account. Almost his last reflection about his life at Bologna is one in which he records his satisfaction that all the men who plotted against him there met their death soon after their attempt, thus sharing the fate of his enemies at Milan and Pavia. If he is to be believed in this matter, the Fates, though they might not shield him from attack, proved themselves to be diligent and remorseless avengers of his wrongs. At the end of September he turned his back upon Bologna and the cold hospitality it had given him, and set forth on his last journey. He travelled by easy stages, and entered Rome on October 7, 1571, the day upon which Don John of Austria annihilated the Turkish fleet at Lepanto. There are evidences in his later writings beyond those already cited, that Cardan's views on religion had undergone change during his sojourn at Bologna. It was the custom, even with theologians of the time, to illustrate freely from the classics, wherefore the spectacle of the names of the great men of Greek and Roman letters, scattered thickly about the pages of any book, would not prove or even suggest unorthodoxy. Cardan quotes Plato or Aristotle or Plotinus twenty times for any saint in the Calendar. He does not mention the Virgin more than once or twice in the whole of the _De Vita Propria_; and, in discoursing on the immortality of the soul, he cites the opinion of Avicenna, but makes no mention of either saint or father.[230] The world of classic thought was immeasurably nearer and more real to Cardan than it can be to any modern dweller beyond the Alps: to him there had been no solution of continuity between classic times and his own. When he sat down to write in the _Theonoston_ his meditations on the death of his son, in the vain hope of reaping consolation therefrom, he invoked the golden rule of Plotinus, which lays down that the future is foreseen and arranged by the gods. Being thus arranged, it must needs be just, for God is the highest expression of justice. Against a fate thus settled for us we have no right to complain, lest we should seem to be setting ourselves into opposition to God's will. Here, although he writes in the spirit of a Christian, the authority cited is that of a heathen philosopher, and the form of his meditations is taken rather from Seneca than from father or schoolman. The devotional bias of Cardan's nature seems to have been strengthened temporarily by the terrible experiences of Gian Battista's trial and death; but in the course of his residence at Bologna a marked reaction set in, and the fervent religious outburst, in which he sought consolation during his intolerable sorrow, was succeeded by a calmer mood which regarded the necessary evils