Sigrid Undset said this quote
“ She [Catherine of Siena] found a place of refuge in a lonely wood, where some hermits lived. It is generally thought that this brotherhood was the community of hermits in Vallombrosa, founded by St. John Gualbert, the man who had spared the life of his deadly enemy because it was Good Friday, and later rushed into the nearest church and fell before the feet of the crucified Christ, as though drunk with this adventure - the adventure of forgiveness. And the Saviour leaned down from the cross and kissed the boy. ”