DOG IN THE MANGER • DICCIONARIO INGLES.COM • Definition of Dog in the manger

... generosity, and indeed of any other virtue, may rightfully be punished, justice fully sanctioning the punishment although indicating also the nature of the penalty to be inflicted in each case, and restricting it within certain limits. Whoever plays the dog in the manger in a manger of his own, or makes an exclusively selfish use of his wealth or other advantages, refusing to do good to his neighbour at however little sacrifice on his own part it might be done, is ...

— Old-Fashioned Ethics and Common-Sense Metaphysics - With Some of Their Applications • William Thomas Thornton