Akademik

сердце не камень
СЕРДЦЕ НЕ КАМЕНЬ{{}}
[saying]
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(one fulfills another's request, does sth. to make another happy, makes concessions to another etc because) despite one's reluctance to oblige s.o., one has feelings and cannot help but be responsive, compassionate:
- a man's heart isn't made of stone;
- one doesn't have a heart of stone.
     ♦ "На днях...въезжает на санях во двор, по воде и грязи больной крестьянин... Отказываюсь принять. "Не взыщи, милый, перестал этим заниматься..."... "Помоги. Кожею скудаем [regional = болеем]. Помилосердствуй..." Что делать? Сердце не камень Раздевайся"" (Пастернак 1). "The other day...a sick peasant drove his sleigh into the yard through the mud and slush. I refused to examine him. 'I've given up practicing,' I said. ...'Help me. My skin is bad. Have pity on me. ...'What could I do? I don't have a heart of stone. I told him to undress" (1a).

Большой русско-английский фразеологический словарь. — М.: ACT-ПРЕСС КНИГА. . 2004.