Three moments of maximum splendor had the Iranian culture and civilization, and these are pted and added up, so to speak, in three equally glorious a… - Italo Pizzi

With Yezdeghird the series of Persian monarchs closes, and the conquest of the Arabs marks the entering Iran of a new faith, a new law and new rulers.

If the Homeric poems are a faithful mirror of the heroic life of the Greeks, of the feelings and ideas of that age, the Book of Kings is no less the faithful image of the soul, heart and ingenuity of the Persian people. (pp. X-XI)

The '[Avestā|Avesta]]' is not an organic book, it is not the work of a single creative and thinking mind, yes well the collection of several works, indeed of fragments of several works that have been lost. It therefore, due to the varied nature of the parts that compose it, can interest the public and scholars in two distinct and different ways. It may interest the philosopher and the theologian as the sacred code of a religion already famous in antiquity; it may interest the historian, the literate, the poet, in that part of it that touches life and customs, the ideas of people lived in remote ages, and expresses, maxims in the poetic part, thoughts, affections, vows, aspirations.