Henryk Sienkiewicz said this quote
“ Amid the stillness of the night, in the depths of the ravine, from the direction in which the corpses lay suddenly resounded a kind of inhuman, frightful laughter in which quivered despair, and joy, and cruelty, and suffering, and pain, and sobbing, and derision; the heart-rending and spasmodic laughter of the insane or condemned. ”