Bhagavadgita 2.p5.1

2.p5.1

The Deity said: You have grieved for those who deserve no grief, and you talk words of wisdom. Learned men grieve not for the living nor the dead. Never did I not exist, nor you, nor these rulers of men; nor will any one of us ever hereafter cease to be. As, in this body, infancy and youth and old age (come) to the embodied (self), so does the acquisition of another body; a sensible man is not deceived about that The contacts of the senses, O son of Kuntî! which produce cold and heat, pleasure and pain, are not permanent, they are ever coming and going. Bear them, O descendant of Bharata! For, O chief of men! that sensible man whom they (pain and pleasure being alike to him) afflict not, he merits immortality. There is no existence for that which is unreal; there is no non-existence for that which is real. And the (correct) conclusion about both is perceived by those who perceive the truth. Know that to be indestructible which pervades all this; the destruction of that inexhaustible (principle) none can bring about. These bodies appertaining to the embodied (self) which is eternal, indestructible, and indefinable, are said to be perishable; therefore do engage in battle, O descendant of Bharata! He who thinks it to be the killer and he who thinks it to be killed, both know nothing. It kills not, is not killed. It is not born, nor does it ever die, nor, having existed, does it exist no more.