1 A THOUSAND heads hath Puruṣa, a thousand eyes, a thousand feet. On every side pervading earth he fills a space ten fingers wide. 2 This Puruṣa is all that yet hath been and all that is to be; The Lord of Immortality which waxes greater still by food. 3 So mighty is his greatness; yea, greater than this is Puruṣa. All creatures are one-fourth of him, three-fourths eternal life in heaven. 4 With three-fourths Puruṣa went up: one-fourth of him again was here. –"Hymn XC. Puruṣa," Rig Veda What is the central idea of the text?