What is the theme in St. Anselm: Basic Writings by ?

Faith is an important theme in the text. In Christian theology, to have faith is to believe in Christian doctrine, but not necessarily without evidence. It is to trust that God's promises are true and that what He reveals to us about Him is true. For Anselm, faith must come before understanding in order for reason to be able to properly function. Reason unmoored from faith will inevitably err.