Д379
ЧУЖАЯ ДУША - ПОТЁМКИ (saying) you cannot find out or know what is in another person's soul, what he thinks, what kind of person he is (said when it is difficult to understand a person's true nature, his mood, behavior, intentions): - another person' soul (the human heart) is a mysteryone person' soul is (always) a mystery to anotheryou can never see into another heart.