The Great Epic of the Bhārata dynasty 5.36.44

5.36.44

punarnaro mriyate jāyate ca punarnaro hīyate vardhate punaḥ |
punarnaro yācati yācyate ca punarnaraḥ śocati śocyate punaḥ || 44 ||

He, whose heart is unsteady, or who doth not wait upon the aged, or who is of a restless disposition cannot make friends. Success (in the attainment of objects) forsaketh the person whose heart is unsteady, or who hath no control over his mind, or who is a slave of his senses, like swans forsaking a tank whose waters have dried up. They that are of weak minds suddenly give way to anger and are gratified without sufficient cause; they are like clouds that are so inconstant. The very birds of prey abstain from touching the dead bodies of those who having been served and benefited by friends, show ingratitude to the latter. Beest thou poor or beest thou rich, thou shouldst honour thy friends. Until some service is asked, the sincerity or otherwise of friends cannot be known. Sorrow killeth beauty; sorrow killeth strength; sorrow killeth the understanding; and sorrow bringeth on disease. Grief, instead of helping the acquisition of his object, drieth up the body, and maketh one's foes glad. Therefore, do not yield to grief, Men repeatedly die and are reborn; repeatedly they wither away and grow; repeatedly they ask others for help, and they themselves are asked for help; repeatedly they lament and are lamented. Happiness and misery, plenty and want, gain and loss, life and death, are shared by all in due order. Therefore, he that is self-controlled should neither exult in joy nor repine in sorrow. The six senses are always restless.