confined within walls."

"Where do you pray then and offer sacrifice, if you have no temples?"

"On the grandest of all altars, nature herself; our favorite altar is
the summit of a mountain. There we are nearest to our own god, Mithras,
the mighty sun, and to Auramazda, the pure creative light; for there the
light lingers latest and returns earliest."

[From Herodotus (I. 131 and 132.), and from many other sources, we
see clearly that at the time of the Achaemenidae the Persians had
neither temples nor images of their gods. Auramazda and
Angramainjus, the principles of good and evil, were invisible
existences filling all creation with their countless train of good
and evil spirits. Eternity created fire and water. From these
Ormusd (Auramazda), the good spirit, took his origin. He was
brilliant as the light, pure and good. After having, in the course
of 12000 years, created heaven, paradise and the stars, he became
aware of the existence of an evil spirit, Ahriman (Angramainjus),
black, unclean, malicious and emitting an evil odor. Ormusd
determined on his destruction, and a fierce strife began, in which
Ormusd was the victor, and the evil spirit lay 3000 years
unconscious from the effects of terror. During this interval Ormusd
created the sky, the waters, the earth, all useful plants, trees and
herbs, the ox and the first pair of human beings in one year.
Ahriman, after this, broke loose, and was overcome but not slain.
As, after death, the four elements of which all things are composed,
Earth, Air, Fire and Water, become reunited with their primitive
elements; and as, at the resurrection-day, everything that has been
severed combines once more, and nothing returns into oblivion, all
is reunited to its primitive elements, Ahriman could only have been
slain if his impurity could have been transmuted into purity, his
darkness into light. And so evil continued to exist, and to produce
impurity and evil wherever and whenever the good spirit created the
pure and good. This strife must continue until the last day; but
then Ahriman, too, will become pure and holy; the Diws or Daewa
(evil spirits) will have absorbed his evil, and themselves have
ceased to exist. For the evil spirits which dwell in every human
being, and are emanations from Ahriman, will be destroyed in the
punishment inflicted on men after death. From Vuller's Ulmai