Dhammapada verses 41, 42 and 43

41. Ere long, alas! this body will lie upon the earth, unheeded and lifeless, like a useless log.

42. Whatever harm an enemy may do to an enemy, or a hater to a hater, an ill-directed mind inflicts on oneself a greater harm.

43. Neither mother, father, nor any other relative can do one greater good than one’s own well-directed mind.

– Dhammapada III – Cittavagga: The Mind 41, 42 & 43