From his earliest youth he had been the pupil of Daniel, who had inspired him with his own love of the mystic lore to which the prophet owed so much of his singular success in the service of the Assyrian and Persian monarchs.  The boy’s poetical mind, strengthened and developed by the study of the art of reasoning, and of the profound mathematical knowledge of the Chaldean astronomers, easily grasped the highest subjects, and showed from the first a capacity and lucidity that delighted his master.  To attain by a life of rigid ascetic practice to the intuitive comprehension of knowledge, to the understanding of natural laws not discernible to the senses alone, and to the merging of the soul and higher intelligence in the one universal and divine essence, were the objects Daniel proposed to his willing pupil.  The noble boy, by his very nature, scorned and despised the pleasures of sense, and yearned ever for the realising of an ideal wherein a sublime wisdom of transcendent things should direct a sublime courage in things earthly to the doing of great deeds.

Year after year the young Persian grew up in the splendid surroundings of the court, distinguished before all those of his age for his courage and fearless honesty, for his marvellous beauty, and for his profound understanding of all subjects, great and small, that came within the sphere of his activity; most of all remarkable, perhaps, for the fact that he cared nothing for the society of women, and had never been known to love any woman.  He was a favourite with Cyrus; and even Cambyses, steeped in degrading vice, and surrounded by flatterers, panderers, and priests of the Magians, from the time when he began to suspect his brother, the real Smerdis, of designs upon the throne, recognised the exceptional merits and gifts of the young noble, and promoted him to his position in Echatana, at the time when he permitted Daniel to build his great tower in that ancient fortress.  The dissipated king may have understood that the presence of such men as Daniel and Zoroaster would be of greater advantage in an outlying district where justice and moderation would have a good effect upon the population, than in his immediate neighbourhood, where the purity and temperance of their lives contrasted too strongly with the degrading spectacle his own vices afforded to the court.

Here, in the splendid retirement of a royal palace, the prophet had given himself up completely to the contemplation of those subjects which, through all his life, had engrossed his leisure time, and of which the knowledge had so directly contributed to his singular career; and in the many hours of leisure which Zoroaster’s position allowed him, Daniel sought to bring the intelligence of the soldier-philosopher to the perfection of its final development.  Living, as he did, entirely in his tower, save when, at rare intervals, he caused himself to be carried down to the gardens, the prophet knew little of what went on in the palace below, so that he sometimes marvelled that his pupil’s attention wandered, and that his language betrayed occasionally a keener interest in his future, and in the possible vicissitudes of his military life, than he had formerly been wont to show.