Ah, wasteful woman, she who may On her sweet self set her own price, Knowing man cannot choose but pay, How has she cheapen'd paradise; How given for nought her priceless gift, How spoil'd the bread and spill'd the wine, Which, spent with due, respective thrift, Had made brutes men, and men divine. Coventry Patmore
Work for nought makes folks dead lazy. English Proverb
It's no for nought that the gled whistles. Scottish Proverb