Táto autorka sa preslávila ako mystička a filozofka. Jej dielo sa zameriavalo na teologické a filozofické úvahy s cieľom nastoliť mier a jednotu medzi vtedajšími mestskými štátmi. Svojím vplyvom sa zasadila o návrat pápežstva do Ríma, čím ovplyvnila politické dianie svojej doby. Jej spisy a myšlienky z nej urobili významnú postavu európskych dejín.
This classic of the first female Doctor of the Church presents itself as a conversation or dialogue between the saint and God the Father, and is composed of four treatises: on Divine Providence, on Discretion, on Prayer, and on Obedience. It covers a very wide range of topics surrounding the Catholic faith and the spiritual life and exhales the tremendous love for God and zeal for souls for which the virgin of Siena is so well known.
Catherine of Siena (1347-1380), wrote her crowning spiritual work, for the instruction and encouragement of all those whose spiritual welfare was her concern.