Here a supreme god is described under the name of "Lord of Beings," the "All-maker," "The Golden Germ," the "God over gods, the spirit of their being" (x. 121). The last, a famous hymn, Müller entitles "To the Unknown God." It may have been intended, as has been suggested, for a theological puzzle,[29] but its language evinces that in whatever form it is couched--each verse ends with the refrain, 'To what god shall we offer sacrifice?' till the last verse answers the question, saying, 'the Lord of beings'--it is meant to raise the question of a supreme deity and leave it unanswered in terms of a nature-religion, though the germ is at bottom fire: "In the beginning arose the Golden Germ; as soon as born he became the Lord of All. He established earth and heaven--to what god shall we offer sacrifice? He who gives breath, strength, whose command the shining gods obey; whose shadow is life and death.... When the great waters went everywhere holding the germ and generating light, then arose from them the one spirit (breath) of the gods.... May he not hurt us, he the begetter of earth, the holy one who begot heaven ... Lord of beings, thou alone embracest all things ..." In this closing period of the Rig Veda--a period which in many ways, the sudden completeness of caste, the recognition of several Vedas, etc., is much farther removed from the beginning of the work than it is from the period of Brahmanic speculation--philosophy is hard at work upon the problems of the origin of gods and of being. As in the last hymn, water is the origin of all things; out of this springs fire, and the wind which is the breath of god. So in the great hymn of creation: "There was then neither not-being nor being; there was no atmosphere, no sky. What hid (it)? Where and in the protection of what? Was it water, deep darkness? There was no death nor immortality. There was no difference between night and day. That One breathed ... nothing other than this or above it existed. Darkness was concealed in darkness in the beginning. Undifferentiated water was all this (universe)." Creation is then declared to have arisen by virtue of desire, which, in the beginning was the origin of mind;[30] and "the gods," it is said further, "were created after this." Whether entity springs from non-entity or vice versa is discussed in another hymn of the same book.[31] The most celebrated of the pantheistic hymns is that in which the universe is regarded as portions of the deity conceived as the primal Person: "Purusha (the Male Person) is this all, what has been and will be ... all created things are a fourth of him; that which is immortal in the sky is three-fourths of him." The hymn is too well known to be quoted entire. All the castes, all gods, all animals, and the three (or four) Vedas are parts of him.[32]