Then came his deliverances upon undecided points in theology, in his XII.
The 13th section, or Spend Nask, which was mainly consecrated to the description of his life, has perished; while the biographies founded upon it in the 7th book of the Dinkard (9th century A.D.), the Shah-Nama, and the Zardusht-Nama (13th century), are thoroughly legendary - full of wonders, fabulous histories and miraculous deliverances.
Broadly speaking his work in those very 'eighties was not so good as the labour, essentially delicate and fresh and just, of some years earlier, nor had it always the attractiveness of the impulsive deliverances of some years later, when the inspired sketch was the thing that he generally stopped at.
In the midst of the torrent of his most strenuous and passionate deliverances, he suddenly rises aloof from his immediate subject, and in all tranquillity reminds us of some permanent relation of things, some enduring truth of human life or human society.