اَلْقَلْبُ يَعْرِفُ مَرَارَةَ نَفْسِهِ، وَبِفَرَحِهِ لَا يُشَارِكُهُ غَرِيبٌ.
The heart knoweth his own bitterness; and a stranger doth not intermeddle with his joy.