Aitareya is one of the earliest Upanishads and is attributed to sage Mahidasa Aitareya. It consists of five sections, viz. sections 21 to 25. These sections form the 4th, 5th, and 6th chapters of the 2nd part of the Rigveda Aranyaka. --- For *the young student the मन्त्र Samhita verses. *the householder the ब्राह्मण Brahmana verses. *the retired the आरण्यक Aranyaka verses. *the sannyasi the उपनिषद् Upanishad verses. ---- *Young Student = one who is yet being cared for by parents. *Householder = one who is in the thick of earning, raising a family, or actively engaged in society. *Retired = one who is out of the grind and living on savings. *Sannyasi = one who is free in mind and light at heart. ---- These four phases are not separated in time or by age. These may occur in any order in a man’s life, sometimes concurrent, sometimes...