In this intense and searching work, the holy saint of Siena offers up petitions to God, filling her conversation with instruction on discernment, true and false spiritual emotion, obedience, and truth, and revealing her famous image of Christ as the Bridge. Catherine's brilliant insights into the nature of the spiritual life and the character of the Church will motivate contemporary Christians who seek to unite a life of prayer with a life of action.This classic work is presented here in a mildly modernised and edited form.