"On Saturday and Sunday, he felt the sweet lightness of being rise up to him out of the depths of the future. On Monday, he was hit by the weight the likes of which he had never known. The tons of steel of the Russian tanks were nothing compared with it. For there is nothing heavier than compassion. Not even one own’s pain weighs so heavy as the pain one feels with someone, for someone, a pain intensified by the imagination and prolonged by a hundred echoes."
The Unbearable Lightness of Being, Milan Kundera