देहिनोऽस्मिन्यथा देहे कौमारं यौवनं जरा ।तथा देहान्तरप्राप्तिर् धीरस्तत्र न मुह्यति ॥
dehino’sminyathā dehe kaumāraṃ yauvanaṃ jarātathā dehāntaraprāptir dhīrastatra na muhyati
As the soul passes physically through childhood and youth and age, so it passes on to the changing of the body. The self-composed man does not allow himself to be disturbed and blinded by this.
Gītā 2·13The soul, not the body, is the reality. All these kings of men for whose approaching death he mourns, have lived before, they will live again in the human body; for as the soul passes physically through childhood and youth and age, so it passes on to the changing of the body. The calm and wise mind, the dhnra, the thinker who looks upon life steadily and does not allow himself to be disturbed and blinded by his sensations and emotions, is not deceived by material appearances; he does not allow the clamour of his blood and his nerves and his heart to cloud his judgment or to contradict his knowledge. He looks beyond the apparent facts of the life of the body and senses to the real fact of his being and rises beyond the emotional and physical desires of the ignorant nature to the true and only aim of the human existence.