when a man shuts his breast against compassion, and refuses to relieve the misery of his fellow-creatures, when he can with the greatest ease
 Adam Smith, The Theory of Moral Sentiments (1759). copy citation

Context

“But when a father fails in the ordinary degree of parental affection towards a son; when a son seems to want that filial reverence which might be expected to his father; when brothers are without the usual degree of brotherly affection; when a man shuts his breast against compassion, and refuses to relieve the misery of his fellow-creatures, when he can with the greatest ease; in all these cases, though every body blames the conduct, nobody imagines that those who might have reason, perhaps, to expect more kindness, have any right to extort it by force. The sufferer can only complain, and the spectator can intermeddle no other way than by advice and persuasion.” source